1.verbTo 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.
"He sighed over the lost opportunity."
2.verbTo lament; to grieve.
3.verbTo utter sighs over; to lament or mourn over.
4.verbTo experience an emotion associated with sighing.
"He silently sighed for his lost youth."
5.verbTo make a sound like sighing.
6.verbTo exhale (the breath) in sighs.
"She sighed a sigh that was nearly a groan."
7.verbTo express by sighs; to utter in or with sighs.