thanksˈgiving noun

1. The act of giving thanks
2. A public acknowledgement of divine goodness and mercy
3. (with cap) a day (Thanksgiving Day) set apart for this, esp that in the USA since the time of the Pilgrim Fathers, now fixed as the fourth Thursday of November, or that in Canada, fixed as the second Monday in October
4. A form of giving thanks, a grace, that form preceding the last two prayers of morning or evening prayer or of the litany, the General Thanksgiving

adjective

Serving to give thanks

thankˈyou adjective

Expressing gratitude

noun

Anything expressing gratitude, esp a gift

thankˈ-you-ma'am noun (US)

A ridge or hollow in a road that causes those who drive over it to bob their heads

be thankit (Scot)

Thank God

have (only) oneself to thank for

To be the cause of (one's own misfortune)

I'll thank you, him, etc to

Used, usu in anger, to introduce a request or command

no thanks to

Not owing to, implying that gratitude is far from being due

thank God (or thank goodness, thank heavens, etc)

An expression of relief

thank one's lucky stars see under star¹

thanks be

Thank God

thanks to

Owing to

thank you, thanks or (old) thankˈee

Elliptical forms of earlier thanks be to you, I thank you and similar expressions, conventional expressions of gratitude

thank you (or thanks) for nothing (informal)

An expression implying that no gratitude is due at all