イライラ

イライラ describes a lingering, drawn-out irritation, while ムッと is a sudden flash of displeasure at a specific moment.

いらいら implies irritation or frustration, while そわそわ focuses on nervous restlessness without necessarily being annoyed.

いらいらする describes irritation or annoyance at a situation or person, whereas 焦る is about feeling rushed or anxious about time or outcomes.

いらいら focuses on irritation and frustration, whereas せかせか is more about physical restlessness and rushing.

イライラ is the common everyday word for feeling irritated, while くしゃくしゃ in this sense is a less frequent, more literary mimetic expression for the same frustration.

いらいらする describes a nagging, jittery irritation that builds up, whereas 腹立つ is a sudden burst of anger at a specific cause.

イライラ describes the irritable, on-edge feeling that often results from フラストレーション, but focuses on short-term annoyance rather than blocked goals.