Sigh
Part of speech: noun
Definition: A deep and prolonged audible inspiration or respiration of air, as when fatigued, frustrated, grieved, or relieved; the act of sighing. Figuratively, a manifestation of grief; a lament. (cockney slang) A person with boredom
Part of speech: verb
Definition: 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. Hence, to lament; to grieve. To make a sound like sighing. To exhale (the breath) in sighs. To utter sighs over; to lament or mourn over. To express by sighs; to utter in or with sighs. To express frustration.
Example sentence: What better is there to sigh for than happiness, yesterday's or tomorrow's.
Suspiration
Part of speech: noun
Definition: The act of breathing, not necessarily for a sustained period (cf. respiration, which is sustained)