English
acidy
From acid + -y.
Formed from acid + -y
Proto-Indo-European *h₂eḱ- ‘sharp’
…
Proto-Italic *akēō
Latin aceō ‘to be sour’
Latin acidus ‘sour’
French acide ‘acid’
English acid
Today it means
adj Like an acid, somewhat acidic.
Language periods are conventional ranges, not dates for this word.
Etymograph / acidy