Ill-humored is a related term of irritable.
As adjectives the difference between ill-humored and irritable
is that ill-humored is having a bad temper while irritable is capable of being irritated.
ill-humored
English
Alternative forms
* ill-humoured
Adjective
(
en adjective)
having a bad temper
irritable in a surly manner.
irritable
English
Adjective
(
en adjective)
Capable of being irritated.
Easily exasperated or excited.
Responsive to stimuli.
Derived terms
* irritably
* irritability
* irritable bowel syndrome