Rarefy

hard

RAIR-uh-fye

verb

Definition

to make less dense or thinner; to refine or make more esoteric

Examples

At high altitude the air rarefies, leaving climbers gasping for oxygen.
Critics argued that the journal had rarefied its prose until ordinary readers could no longer follow it.

Synonyms

thinrefineattenuatepurify

Antonyms

thickencondensedensifycoarsen

Categories

GRE Tip

Rarefy is a hard-difficulty GRE word. On the GRE, you might see it paired with synonyms like "thin" or "refine" in Sentence Equivalence questions. Look for contrast clues (however, despite, although) that signal the opposite meaning. Words like "thicken".

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