1.
feeling of impatience; sense of restless frustration; anxiety-driven restlessness
An uneasy, agitated feeling of being unable to wait or stay still, often arising from frustration at things not going as planned or from a sense of urgency.
Common collocations: 焦燥感に駆られる (to be seized by restless frustration), 焦燥感を覚える (to feel a sense of impatience), 焦燥感が募る (for restless frustration to build up). The suffix ～感 (feeling, sense) creates emotion nouns: 不安感 (sense of unease), 達成感 (sense of achievement), 疎外感 (sense of alienation). The base word 焦燥 (impatience, irritation) is less common on its own. Related: 苛立ち (irritation — more everyday), 焦り (impatience — more colloquial).