Acidulous

//əˈsɪdjʊləs// adj

Definitions

Adjective
  1. 1
    Slightly sour; subacid; sourish.

    "the hard, acidulous, metallic tincture of the spring"

  2. 2
    Sharp; caustic. figuratively

    "He talked with acidulous tolerance of the exalted personages who had sent Ashenden to X."

  3. 3
    Containing carbonic acid.

    "acidulous mineral waters"

Adjective
  1. 1
    being sour to the taste wordnet

Etymology

Learned borrowing from Latin acidulus (“sourish, acidulous”), diminutive of acidus (“sour, acid”). See acid.

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