GRE TOEFL humidity Definition The concentration of water vapor in the atmosphere. Example "High humidity made the summer heat even more unbearable." Sign in to save GRE Quiz → TOEFL Quiz → ← humid humiliate → Study tips featuring "humidity" Write GRE Words Into Your Own Sentences TOEFL Academic Vocabulary: Study by Topic Related words GRE swill GRE taper GRE testy GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct