Sigh

–verb (used without object)

1.to let out one's breath audibly, as from sorrow, weariness, or relief.
2.to yearn or long; pine.
3.to make a sound suggesting a sigh: sighing wind.

–verb (used with object)\

4.to express or utter with a sigh.
5.to lament with sighing.

–noun

6.the act or sound of sighing.

—Related forms

sigher, noun
outsigh, verb (used with object)
un·sigh·ing, adjective

--Used in a sentence: Jess sighed for many reasons.

Source: http://www.dictionary.com/