SAT Vocabulary Words 18

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Approximately 5000 vocabulary words that should be memorized before taking the SAT. This lesson is broken into 26 parts.

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neurology

neurology (n)
The science of the nervous system.

neuter

neuter (adj)
Neither masculine nor feminine.

neutral

neutral (adj)
Belonging to or under control of neither of two contestants.

Newtonian

Newtonian (adj)
Of or pertaining to Sir Isaac Newton, the English philosopher.

niggardly

niggardly (adj)
Stingy. (no longer acceptable to use)

nihilist

nihilist (n)
An advocate of the doctrine that nothing either exists or can be known.

nil

nil (n)
Nothing

nimble

nimble (adj)
Light and quick in motion or action.

nit

nit (n)
The egg of a louse or some other insect.

nocturnal

nocturnal (adj)
Of or pertaining to the night.

noiseless

noiseless (adj)
Silent.

noisome

noisome (adj)
Very offensive, particularly to the sense of smell.

noisy

noisy (adj)
Clamorous.

nomad

nomad (adj)
Having no fixed abode.

nomic

nomic (adj)
Usual or customary.

nominal

nominal (adj)
Trivial.

nominate

nominate (v)
To designate as a candidate for any office.

nomination

nomination (n)
The act or ceremony of naming a man or woman for office.

nominee

nominee (n)
One who receives a nomination.

non-existent

non-existent (n)
That which does not exist.

non-resident

non-resident (adj)
Not residing within a given jurisdiction.

nonchalance

nonchalance (n)
A state of mind indicating lack of interest.

non-combatant

non-combatant (n)
One attached to the army or navy, but having duties other than that of fighting.

nondescript

nondescript (adj)
Indescribable.

nonentity

nonentity (n)
A person or thing of little or no account.

nonpareil

nonpareil (n)
One who or that which is of unequaled excellence.

norm

norm (n)
A model.

normalcy

normalcy (n)
The state of being normal.

Norman

Norman (adj)
Of or peculiar to Normandy, in northern France.

nostrum

nostrum (n)
Any scheme or recipe of a charlatan character.

noticeable

noticeable (adj)
Perceptible.

notorious

notorious (adj)
Unfavorably known to the general public.

novellette

novellette (n)
A short novel.

novice

novice (n)
A beginner in any business or occupation.

nowadays

nowadays (adv)
In the present time or age.

nowhere

nowhere (adv)
In no place or state.

noxious

noxious (adj)
Hurtful.

nuance

nuance (n)
A slight degree of difference in anything perceptible to the sense of the mind.

nucleus

nucleus (n)
A central point or part about which matter is aggregated.

nude

nude (adj)
Naked.

nugatory

nugatory (adj)
Having no power or force.

nuisance

nuisance (n)
That which annoys, vexes, or irritates.

numeration

numeration (n)
The act or art of reading or naming numbers.

numerical

numerical (adj)
Of or pertaining to number.

nunnery

nunnery (n)
A convent for nuns.

nuptial

nuptial (adj)
Of or pertaining to marriage, especially to the marriage ceremony.

nurture

nurture (n)
The process of fostering or promoting growth.

nutriment

nutriment (n)
That which nourishes.

nutritive

nutritive (adj)
Having nutritious properties.

oaken

oaken (adj)
Made of or from oak.

oakum

oakum (n)
Hemp-fiber obtained by untwisting and picking out loosely the yarns of old hemp rope.

obdurate

obdurate (adj)
Impassive to feelings of humanity or pity.

obelisk

obelisk (n)
A square shaft with pyramidal top, usually monumental or commemorative.

obese

obese (adj)
Exceedingly fat.

obesity

obesity (n)
Excessive fatness.

obituary

obituary (adj)
A published notice of a death.

objective

objective (adj)
Grasping and representing facts as they are.

objector

objector (n)
One who objects, as to a proposition, measure, or ruling.

obligate

obligate (v)
To hold to the fulfillment of duty.

obligatory

obligatory (adj)
Binding in law or conscience.

oblique

oblique (adj)
Slanting; said of lines.

obliterate

obliterate (v)
To cause to disappear.

oblivion

oblivion (n)
The state of having passed out of the memory or of being utterly forgotten.

oblong

oblong (adj)
Longer than broad: applied most commonly to rectangular objects considerably elongated

obnoxious

obnoxious (adj)
Detestable.

obsequies

obsequies (n)
Funeral rites.

obsequious

obsequious (adj)
Showing a servile readiness to fall in with the wishes or will of another.

observance

observance (n)
A traditional form or customary act.

observant

observant (adj)
Quick to notice.

observatory

observatory (n)
A building designed for systematic astronomical observations.

obsolescence

obsolescence (n)
The condition or process of gradually falling into disuse.

obsolescent

obsolescent (adj)
Passing out of use, as a word.

obsolete

obsolete (adj)
No longer practiced or accepted.

obstetrician

obstetrician (n)
A practitioner of midwifery.

obstetrics

obstetrics (n)
The branch of medical science concerned with the treatment and care of women during pregnancy.

obstinacy

obstinacy (n)
Stubborn adherence to opinion, arising from conceit or the desire to have one's own way.

obstreperous

obstreperous (adj)
Boisterous.

obstruct

obstruct (v)
To fill with impediments so as to prevent passage, either wholly or in part.

obstruction

obstruction (n)
Hindrance.

obtrude

obtrude (v)
To be pushed or to push oneself into undue prominence.

obtrusive

obtrusive (adj)
Tending to be pushed or to push oneself into undue prominence.

obvert

obvert (v)
To turn the front or principal side of (a thing) toward any person or object.

obviate

obviate (v)
To clear away or provide for, as an objection or difficulty.

occasion

occasion (n)
An important event or celebration.

Occident

Occident (n)
The countries lying west of Asia and the Turkish dominions.

occlude

occlude (v)
To absorb, as a gas by a metal.

occult

occult (adj)
Existing but not immediately perceptible.

occupant

occupant (n)
A tenant in possession of property, as distinguished from the actual owner.

occurrence

occurrence (n)
A happening.

octagon

octagon (n)
A figure with eight sides and eight angles.

octave

octave (n)
A note at this interval above or below any other, considered in relation to that other.

octavo

octavo (n)
A book, or collection of paper in which the sheets are so folded as to make eight leaves.

octogenarian

octogenarian (adj)
A person of between eighty and ninety years.

ocular

ocular (adj)
Of or pertaining to the eye.

oculist

oculist (n)
One versed or skilled in treating diseases of the eye.

oddity

oddity (n)
An eccentricity.

ode

ode (n)
The form of lyric poetry anciently intended to be sung.

odious

odious (adj)
Hateful.

odium

odium (n)
A feeling of extreme repugnance, or of dislike and disgust.

odoriferous

odoriferous (adj)
Having or diffusing an odor or scent, especially an agreeable one.

odorous

odorous (adj)
Having an odor, especially a fragrant one.

off

off (adj)
Farther or more distant.

offhand

offhand (adv)
Without preparation.

officiate

officiate (v)
To act as an officer or leader.

officious

officious (adj)
Intermeddling with what is not one's concern.

offshoot

offshoot (n)
Something that branches off from the parent stock.

ogre

ogre (n)
A demon or monster that was supposed to devour human beings.

ointment

ointment (n)
A fatty preparation with a butter-like consistency in which a medicinal substance exists.

olfactory

olfactory (adj)
of or pertaining to the sense of smell.

olive-branch

olive-branch (n)
A branch of the olive-tree, as an emblem of peace.

ominous

ominous (adj)
Portentous.

omission

omission (n)
Exclusion.

omnipotence

omnipotence (n)
Unlimited and universal power.

Omnipotent

Omnipotent (adj)
Possessed of unlimited and universal power.

omniscience

omniscience (n)
Unlimited or infinite knowledge.

omniscient

omniscient (adj)
Characterized by unlimited or infinite knowledge.

omnivorous

omnivorous (adj)
Eating or living upon food of all kinds indiscriminately.

onerous

onerous (adj)
Burdensome or oppressive.

onrush

onrush (n)
Onset.

onset

onset (n)
An assault, especially of troops, upon an enemy or fortification.

onslaught

onslaught (n)
A violent onset.

onus

onus (n)
A burden or responsibility.

opalescence

opalescence (n)
The property of combined refraction and reflection of light, resulting in smoky tints.

opaque

opaque (adj)
Impervious to light.

operate

operate (v)
To put in action and supervise the working of.

operative

operative (adj)
Active.

operator

operator (n)
One who works with or controls some machine or scientific apparatus.

operetta

operetta (n)
A humorous play in dialogue and music, of more than one act.

opinion

opinion (n)
A conclusion or judgment held with confidence, but falling short of positive knowledge.

opponent

opponent (n)
One who supports the opposite side in a debate, discussion, struggle, or sport.

opportune

opportune (adj)
Especially fit as occurring, said, or done at the right moment.

opportunist

opportunist (n)
One who takes advantage of circumstances to gain his ends.

opportunity

opportunity (n)
Favorable or advantageous chance or opening.

opposite

opposite (adj)
Radically different or contrary in action or movement.

opprobrium

opprobrium (n)
The state of being scornfully reproached or accused of evil.

optic

optic (n)
Pertaining to the eye or vision.

optician

optician (n)
One who makes or deals in optical instruments or eye-glasses.

optics

optics (n)
The science that treats of light and vision, and all that is connected with sight.

optimism

optimism (n)
The view that everything in nature and the history of mankind is ordered for the best.

option

option (n)
The right, power, or liberty of choosing.

optometry

optometry (n)
Measurement of the powers of vision.

opulence

opulence (n)
Affluence.

opulent

opulent (adj)
Wealthy.

oral

oral (adj)
Uttered through the mouth.

orate

orate (v)
To deliver an elaborate or formal public speech.

oration

oration (n)
An elaborate or formal public speech.

orator

orator (n)
One who delivers an elaborate or formal speech.

oratorio

oratorio (n)
A composition for solo voices, chorus, and orchestra, generally taken from the Scriptures.

oratory

oratory (n)
The art of public speaking.

ordeal

ordeal (n)
Anything that severely tests courage, strength, patience, conscience, etc.

ordinal

ordinal (n)
That form of the numeral that shows the order of anything in a series, as first, second, third.

ordination

ordination (n)
A consecration to the ministry.

ordnance

ordnance (n)
A general name for all kinds of weapons and their appliances used in war.

orgies

orgies (n)
Wild or wanton revelry.

origin

origin (n)
The beginning of that which becomes or is made to be.

original

original (adj)
Not copied nor produced by imitation.

originate

originate (v)
To cause or constitute the beginning or first stage of the existence of.

ornate

ornate (adj)
Ornamented to a marked degree.

orthodox

orthodox (adj)
Holding the commonly accepted faith.

orthodoxy

orthodoxy (n)
Acceptance of the common faith.

orthogonal

orthogonal (adj)
Having or determined by right angles.

orthopedic

orthopedic (adj)
Relating to the correcting or preventing of deformity

orthopedist

orthopedist (n)
One who practices the correcting or preventing of deformity

oscillate

oscillate (v)
To swing back and forth.

osculate

osculate (v)
To kiss.

ossify

ossify (v)
to convert into bone.

ostentation

ostentation (n)
A display dictated by vanity and intended to invite applause or flattery.

ostracism

ostracism (n)
Exclusion from intercourse or favor, as in society or politics.

ostracize

ostracize (v)
To exclude from public or private favor.

ought

ought (v)
To be under moral obligation to be or do.

oust

oust (v)
To eject.

out-and-out

out-and-out (adv)
Genuinely.

outbreak

outbreak (n)
A sudden and violent breaking forth, as of something that has been pent up or restrained.

outburst

outburst (n)
A violent issue, especially of passion in an individual.

outcast

outcast (n)
One rejected and despised, especially socially.

outcry

outcry (n)
A vehement or loud cry or clamor.

outdo

outdo (v)
To surpass.

outlandish

outlandish (adj)
Of barbarous, uncouth, and unfamiliar aspect or action.

outlast

outlast (v)
To last longer than.

outlaw

outlaw (n)
A habitual lawbreaker.

outlive

outlive (v)
To continue to exist after.

out-of-the-way

out-of-the-way (adj)
Remotely situated.

outpost

outpost (n)
A detachment of troops stationed at a distance from the main body to guard against surprise.

outrage

outrage (n)
A gross infringement of morality or decency.

outrageous

outrageous (adj)
Shocking in conduct.

outreach

outreach (v)
To reach or go beyond.

outride

outride (v)
To ride faster than.

outrigger

outrigger (n)
A part built or arranged to project beyond a natural outline for support.

outright

outright (adv)
Entirely.

outskirt

outskirt (n)
A border region.

outstretch

outstretch (v)
To extend.

outstrip

outstrip (v)
To go beyond.

outweigh

outweigh (v)
To surpass in importance or excellence.

overdo

overdo (v)
To overtax the strength of.

overdose

overdose (n)
An excessive dose, usually so large a dose of a medicine that its effect is toxic.

overeat

overeat (v)
To eat to excess.