rarefy

Verb

lessen the density or solidity of
make more subtle or refined
weaken the consistency of (a chemical substance)
To make rare, thin, porous, or less dense.
To become rare, thin or less dense.
-EFIED, -EFYING, -EFIES to make less dense

Origin / Etymology

From Middle English rarefien, from Old French rarefier (French raréfier), from Latin rarefacere (“make rare”). By surface analysis, rare + -fy.

Synonyms

attenuate, sublimate, subtilize, stretch

Antonyms

condense

Scrabble Score: 12

rarefy: valid Scrabble (US) TWL word
rarefy: valid Scrabble Word in Merriam-Webster MW Dictionary
rarefy: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 11

rarefy is a valid Words With Friends word