1. [noun] A deep and prolonged audible inspiration or respiration of air, as when fatigued, frustrated, grieved, or relieved; the act of sighing.
2. [noun] Figuratively, a manifestation of grief; a lament.
3. [noun] (Cockney rhyming slang) A person who is bored.
4. [verb] (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.
5. [verb] (intransitive) To lament; to grieve.
6. [verb] (intransitive) (transitive) To utter sighs over; to lament or mourn over.
7. [verb] (intransitive) To experience an emotion associated with sighing.
8. [verb] (intransitive) To make a sound like sighing.
9. [verb] (transitive) To exhale (the breath) in sighs.
10. [verb] (transitive) To express by sighs; to utter in or with sighs.
11. [interjection] An expression of fatigue, exhaustion, grief, sorrow, frustration, or the like, often used in casual written contexts.
12. [noun] An utterance made by exhaling audibly.
13. [noun] A sound like a person sighing; 'she heard the sigh of the wind in the trees'.
14. [verb] Heave or utter a sigh; breathe deeply and heavily; 'She sighed sadly'.
15. [verb] Utter with a sigh.
