Difficult IELTS Words - Group 5

any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream

overrun; invade in great numbers; occupy in large numbers or live on a host

hinder; charge with improper conduct; challenge validity of; try to discredit

bearing of fruit; fulfillment; realization

reveal or tell; grant a share of; bestow

a short, hurried view

earning as a total income or profit before deductions

any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream

process of increasing in number, size, quantity, or extent

tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation

brief explanation of words, often placed at back of book

make a harsh noise; have an unpleasant effect; shred

building for storing threshed grain; region yielding much grain

enormous; boundless; so great as to be beyond measurement

fundamental structure, as for a written work; skeleton

brief explanation of words, often placed at back of book

foundation or basis; fundamental parts that support or allow for the rest

of the same or similar nature or kind

students visiting a foreign country to study, board with a local family at an affordable price

chart; a drawing illustrating the relations

make a harsh noise; have an unpleasant effect; shred

hinder; charge with improper conduct; challenge validity of; try to discredit

area or environment where an organism or ecological community normally lives or occurs; place where a person or thing is most likely to be found

proceeding by steps or degrees; advancing, step by step, as in ascent or descent or from one state to another; regularly progressive

building for storing threshed grain; region yielding much grain

enhance; hoist; raise or increase the quantity or degree of; intensify

plunge into anything, especially a fluid; sink; dip

a short, hurried view

hinder; charge with improper conduct; challenge validity of; try to discredit

tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation

an animal that eats mainly or only plants

move into another country to stay there permanently

plunge into anything, especially a fluid; sink; dip

involving active participation; applied, as opposed to theoretical

stop and rob a vehicle in transit; seize control of by use of force

chart; a drawing illustrating the relations

bearing of fruit; fulfillment; realization

combine something into a larger whole; unite

to this place; to a prescribed limit; up to this time; as yet; until now

unapt; not apt; unsuitable; inept.