Adjectives describing quantity and degree:

abundant
ADJECTIVE Something that is abundant is present in large quantities.
■ There is an abundant supply of cheap labour.
■ Birds are abundant in the tall vegetation.
■ Hydrogen is the most abundant element in the universe.

ample
ADJECTIVE If there is an ample amount of something, there is enough of it and usually some extra.
■ There’ll be ample opportunity to relax, swim and soak up some sun.
■ There were ample supplies of vegetables and fruit as well.

marked
ADJECTIVE A marked change or difference is very obvious and easily noticed.
■ There has been a marked increase in crimes against property.
■ He was a man of austere habits, in marked contrast to his more flamboyant wife.
■ The trends since the 1950s have become even more marked.

modest
ADJECTIVE You use modest to describe something such as an amount, rate or improvement which is fairly small.
■ Unemployment rose to the still modest rate of 0.7%.
■ The democratic reforms have been modest.

negligible
ADJECTIVE An amount or effect that is negligible is so small that it is not worth
Vocabulary for IELTS considering or worrying about.
■ The pay that the soldiers received was negligible.
■ Senior managers are convinced that the strike will have a negligible impact.
■ cut down to negligible proportions

vast
ADJECTIVE Something that is vast is extremely large.
■ The farmers own vast stretches of land.
■ The vast majority of the eggs will be cracked.

Adjectives describing degree of certainty:

definitive
ADJECTIVE Something that is definitive provides a firm conclusion that cannot be questioned.
■ The study population was too small to reach any definitive conclusions.
■ There is no definitive test as yet for the condition.

liable
PHRASE When something is liable to happen, it is very likely to happen.
■ Only a small minority of the mentally ill are liable to harm themselves or others.
■ He is liable to change his mind quite rapidly.

tentative
ADJECTIVE Tentative agreements, plans, or arrangements are not definite or certain, but have been made as a first step.
■ Political leaders have reached a tentative agreement to hold a preparatory conference next month.
■Such theories are still very tentative.
■ The study was adequate to permit at least tentative conclusions.

undisputed
ADJECTIVE If you describe a fact or an opinion as undisputed, you are trying to persuade someone that it is generally accepted as true or correct.
■ the undisputed fact that he had broken the law
■ his undisputed genius

Adverbs describing quantity and degree:

marginally
ADVERB Marginally means to only a sm all extent.
■ Sales last year were marginally higher than in 1991.
■ The Christian Democrats did marginally worse than expected.
■ These cameras have increased only marginally in value over the past decade.

seldom
ADVERB If something seldom happens, it happens only occasionally.
■ They seldom speak.
■ Hypertension can be controlled but seldom cured.
■ The fines were seldom sufficient to force any permanent change.

Adverbs describing degree of certainty:

ostensibly
ADVERB If something is ostensibly true, it seems to be true, but you or other people have doubts about it.
■ ostensibly independent organisations

• reportedly
ADVERB If you say that something is reportedly true, you mean that someone has said that it is true, but you have no direct evidence of it.
[FORMAL]
■ More than two hundred people have reportedly been killed in the past week’s fighting.
■ Now Moscow has reportedly agreed that the sale can go ahead.
■ General Breymann had been shot dead, reportedly by one of his own men.

seemingly
ADVERB You use seem ingly when you want to say that something seems to be true.
■ He moved to Spain, seemingly to enjoy a slower style of life.