irritable

From Wiktionary

Adjective[change]

Positive
irritable

Comparative
more irritable

Superlative
most irritable

  1. If a person is irritable, they are grumpy, angry, cross and/or disagreeable
    When Brian is irritable, he is difficult to get along with.
    I'm always more irritable before I've had my morning coffee.
    Because he was always unpleasant toward his colleagues, Brian was considered the most irritable person in the office.