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400 Must Have Words for the TOEFL LESSON 5 – Time Efficiency Vocabulary Test

400 Must Have Words for the TOEFL LESSON 5 - Time Efficiency Vocabulary Test

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Word List

adjust [əˈdʒəst] v.

To change; to get accustomed to something

 Travelers are advised to adjust their watches before arriving in the new time zone.

Parts of speech     adjustment n., adjustable adj.

arbitrary [ˈɑːbɪtrərɪ] adj.

Chosen simply by whim or chance, not for any specific reason

 The decision to build a school in Blackberry Township was arbitrary, without any thought to future housing patterns.

Parts of speech     arbitrate v., arbitrator n., arbitrarily adv.

denominator [dɪˈnɒmɪneɪtəʳ] n.

The number written below the line in a fraction

 In the fraction 1⁄2, the number 2 is the denominator.

Usage tips     The phrase lowest common denominator means “the most basic and unsophisticated things that most people share.”

Parts of speech     denominate v., denomination n., denominational adj.

exponentially [ˌekspəˈnen(t)ʃəli] adv.

At a very fast rate

 In Turkey, the value of the lira has decreased exponentially in the last several decades.

Usage tips     Exponentially is taken from mathematics,where an exponent is a number indicating how many times something is multiplied by itself.For example,43 contains the exponent “3,” indicating 4 × 4 × 4.

Parts of speech     exponent n., exponential adj.

infinitesimal [ˌɪnfɪnɪˈtesɪməl] adj.

Immeasurably small

 The number of contaminants in the water was infinitesimal, so the water was safe to drink.

Parts of speech     infinitesimally adv.

maximize [ˈmæksɪmaɪz] v.

To increase or make as great as possible

 A coach helps each athlete maximize his or her potential.

Parts of speech     maximum n., maximum adj.

parallel [ˈperəˌlel] adj.

Being an equal distance apart everywhere

 The street where I live runs parallel to the main road through town.

Usage tips     Parallel is often followed by to.

Parts of speech     parallel n., parallel adv.

proportion [prəˈpɔːʃən] n.

A part in relation to the whole

 The average employee spends a large proportion of each workday answering e-mails.

Usage tips     Proportion is often followed by of.

Parts of speech     proportionate adj., proportionally adv.

rate [reɪt] n.

The cost per unit of a good or service; the motion or change that happens in a certain time.

 Some grasses grow at the rate of one inch per day.

Parts of speech     rate v., rating n.

sequence [ˈsiːkwəns] v.

To organize or arrange in succession

 Volunteers have been asked to sequence the files and organize the boxes.

Parts of speech     sequence n., sequentially adv.

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