Words that Rhyme with rapidity
4 Syllable Words
acidity, fluidity, humidity, liquidity, morbidity, rigidity, solidity, timidity, turbidity, validity
6 Syllable Words
superfluidity
Definition of rapidity
n. The quality or state of being rapid; swiftness; celerity; velocity; as, the rapidity of a current; rapidity of speech; rapidity of growth or improvement.