acidulous

As adjectives the difference between acidulous and undefined

is that acidulous is slightly sour; sub-acid; sourish while undefined is lacking a definition or value.

As adjectives the difference between acetic and acidulous

is that acetic is (organic chemistry) of, pertaining to, or producing vinegar while acidulous is slightly sour; sub-acid; sourish.

As adjectives the difference between acidic and acidulous

is that acidic is having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red while acidulous is slightly sour; sub-acid; sourish.

As adjectives the difference between acrid and acidulous

is that acrid is sharp and harsh, or bitter and not to the taste; pungent while acidulous is slightly sour; sub-acid; sourish.

As adjectives the difference between acidulous and sardonic

is that acidulous is slightly sour; sub-acid; sourish while sardonic is scornfully mocking or cynical.

As an adjective acidulous is

slightly sour; sub-acid; sourish.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective acidulous is

slightly sour; sub-acid; sourish.

As adjectives the difference between acidulous and caustic

is that acidulous is slightly sour; sub-acid; sourish while caustic is caustic.