acid
ASS-id · adjective
Origin
English acid comes from French acide, which comes from Latin acidus, meaning 'sour, acid.' That Latin word traces to the verb aceō, 'to be sour.'
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Journey
The word stayed close to its root meaning throughout — from the Latin verb for being sour, to the adjective describing sourness, to English's borrowing of that same quality.
Related words
Acid is a doublet of agita, meaning both words descend from the same root through different paths.
More words
From French