SIGH

noun

1. A deep, prolonged audible inhale and exhale of breath; as when fatigued, frustrated, grieved, or relieved; the act of sighing.
2. Figuratively, a manifestation of grief; a lament.
3. A person who is bored.

verb

1. To inhale a larger quantity of air than usual, and immediately expel it; to make a deep single audible respiration, especially as the result or involuntary expression of fatigue, exhaustion, grief, sorrow, frustration, or the like.
2. To lament; to grieve.
3. To utter sighs over; to lament or mourn over.

interjection

1. An expression of fatigue, exhaustion, grief, sorrow, frustration, or the like, often used in casual written contexts.