'acid-like' originates from the word 'acid,' which comes from Latin 'acidus,' meaning 'sour' or 'sharp.' The suffix '-like' is used in English to denote resemblance.

'acidus' transformed into the Old French word 'acide,' and eventually became the modern English word 'acid.' The suffix '-like' has been used in English since the Middle Ages to form adjectives indicating similarity.

Initially, 'acid' meant 'sour' or 'sharp,' and this meaning has largely remained the same in modern usage.