transitive & intransitive verb . To make or become slightly acid.

To tincture with an acid; render somewhat acid or sourish.

Figuratively, to sour, as the mind; embitter; make cross or captious.

transitive verb. To make sour or acid in a moderate degree; to sour somewhat.

verb. To make something slightly, or moderately acid; to acidify

verb. To make sour in a moderate degree; to sour somewhat

verb. To use an acidic catalyst. The chemical change being emphasised over the importance of the change in ph. Used in the processing of biodiesel co-products.

verb. make sour or more sour

"He sits on a rime-covered steel chest, pours a thick sludge of RonRico and lime juice into his travel cup and drinks the acidulate, relishing the chill around his heart and the tingle in his tongue, evidence of life, non est disputandum."

acidulated  acidulating  

change taste  

acidulated  acidulates  acidulating