what are some antonyms for vital
(ËvaÉªtÉl) adj. 1. (Biology) essential to maintain life: the lungs perform a vital function. 2. forceful, energetic, or lively: a vital person. 3. (Biology) of, relating to, having, or displaying life: a vital organism. 4. indispensable or essential: books vital to this study. 5. of great importance; decisive: a vital game.