r 1 a 1 r 1 e 1 f 4 y 4
6 letters · 12 points in Scrabble
Meaning
verb lessen the density or solidity of
verb make more subtle or refined
verb weaken the consistency of (a chemical substance)
originFrom Middle English rarefien, from Old French rarefier (French raréfier), from Latin rarefacere (“make rare”). By surface analysis, rare + -fy.
Etymology from Wiktionary, CC BY-SA 3.0