4000 Essential English Words 5

140
24
bankrupt, conform, employ, expel, extension, forthcoming, furnish, hygiene, hygienic, landlord, 
lease, mandatory, mend, mortgage, personnel, plumbing, tenant, trendy, utility, whereby
146
25
aesthetic, arrogant, bias, canyon, creek, drill, executive, fatigue, incline, nasty, perceive, 
primate, primitive, stereotype, sticky, termite, thereby, trail, twig, welfare
152
26
behalf, flap, glacier, globe, horizontal, hum, inventory, inward, loaf, oracle, orbit, overview, 
preview, previous, provide, recur, relevant, rite, stall, supernatural
158
27
adapt, biological, cellular, dynamic, fantasy, heredity, internal, minimal, pioneer, prescribe, 
respective, revive, rigid, sequence, substitute, surgeon, therapy, transfer, transition, transplant
164
28
aquarium, arbitrary, autobiography, convention, gracious, improve, insulate, intrigue, longevity, 
misplace, naughty, norm, orangutan, overload, philanthropy, probe, recipient, reptile, thrive, ultimate
170
29
antique, applicant, artifact, authentic, chronology, diplomat, epic, excerpt, fossil, humiliate, 
lyric, majesty, monarch, precede, punctual, recruit, refund, register, renown, tusk
176
30
burden, compromise, craft, crook, currency, enigma, fragile, hybrid, innocence, merge, 
moderate, overwhelm, perception, reunion, rig, shiver, sociable, talkative, tow, tramp
182
9

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About the Vocabulary
The 600 words in each book of this series along with the additional target words 
presented in the appendices included in the first three books of the series are the most 
useful words in English. They were found by analysis of a collection of English course 
books from various levels in the primary, secondary and tertiary school systems. The 
words included in this series were chosen because they occurred many times in different 
levels of these materials. Because of the way
that they were chosen, these words have the following characteristics:
1 They are useful in both spoken and written English. No matter what English course 
you are studying, the words in these books will be of value to you.
2 Each word in these books is a high-frequency word. This means that the effort in 
learning the words is well repaid by the number of times learners have a chance to 
encounter or use them.
3 These books as a whole cover a large proportion of the words in any spoken or written 
text. They cover at least 80% of the words in newspapers and academic texts, and
at least 90% of the words in novels. They also cover at least 90% of the words in 
conversation.