The Basic idea of a GRE Antonyms question is to find the opposite meaning for a given word.
MCQs GRE Antonyms, English antonyms preparation
Each of the following questions consists of a word in capital letters, followed by five words or phrases. Choose the word or phrase that is most nearly opposite in meaning to the word in capital letters. Be sure to consider all the choices before deciding which one is best. The best strategy for GRE Antonyms is to:
Eliminate non-answers. One simple way to eliminate answer choices is to toss out any words that do not have opposite meanings.
It is okay to play around with the part of speech of a word if that helps to answer the question.