
Irritable
Negative Tone
Used when someone's mood is negatively affected, often implies impatience or rudeness.
Avoid asking her for favors when she's irritable.
Temporary State
Can describe a temporary mood, not necessarily a personality trait.
He's usually cheerful, but he's quite irritable today.
Not for Formality
Avoid using in formal writing; find a more formal synonym if needed.
During the meeting, she appeared unusually impatient.