SIGHING

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.

noun

1. The utterance of a sigh.