sour or sharp to the taste
sharp, or biting, or sour in speech, manner, or disposition; caustic
an acid wit
of or containing an acid
of substances: having a pH of less than seven
of, containing, or being an acid
acid soil
said of substances: having a pH of less than seven
said of rock: rich in quartz
said of a colour: piercingly intense
acid yellow
acidity /əʹsiditi/ noun
acidly adv
acidness noun
[French acide from Latin acidus from acēre to be sour, from acer sharp]