bad hair day


noun

a disagreeable or unpleasant day, especially one during which one feels unattractive.

Origin of bad hair day

First recorded in 1990–95

British Dictionary definitions for bad hair day

bad hair day

noun informal

a day on which one's hair is untidy and unmanageable
a day of mishaps and general irritation

Idioms and Phrases with bad hair day

bad hair day

A day when one's appearance, especially one's hair, does not look attractive. For example, What have I done to upset Martha? Nothing, she's just having a bad hair day. Originating as a humorous statement, this term was soon broadened to mean simply having a bad day, that is, a day when everything seems to go wrong. [Late 1980s] Also see not one's day.