Vernon Howard

Tell a man that he is putting on a stage performance in order to get what he wants, and he will irritably reject your observation. Why? Because most people go through life as cunning actors with a permanent horror of getting found out.

American Author

Irritably suggests a negative emotional state, signaling impatience, annoyance, or irritation.

Emotional Tone

While being irritable isn't polite, it's less harsh than being aggressive or confrontational.

Not Rude

Irritably often implies a mild or moderate level of irritation, not extreme anger.