(intransitive) 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.
(intransitive) To lament; to grieve.
(intransitive, transitive) To utter sighs over; to lament or mourn over.
(intransitive) To experience an emotion associated with sighing.
(intransitive) To make a sound like sighing.
(transitive) To exhale (the breath) in sighs.
(transitive) To express by sighs; to utter in or with sighs.
Interjection
An expression of fatigue, exhaustion, grief, sorrow, frustration, or the like, often used in casual written contexts.