to express gratitude, appreciation, or acknowledgment to

She thanked them for their hospitality.

thank God, (used interjectionally to express relief, thankfulness, etc.) Also, thank goodness, thank heaven.

Usually, thanks. a grateful feeling or acknowledgment of a benefit, favor, or the like, expressed by words or otherwise

to return a borrowed book with thanks.

thanks, (used as an informal expression of gratitude, appreciation, or acknowledgment). ?

have oneself to thank

to be personally to blame; have the responsibility

The citizens have only themselves to thank for corruption in government.

thanks to

because of; owing to

Thanks to good organization and hard work, the benefit concert was a great success.

thank you, (used interjectionally to express gratitude, appreciation, or acknowledgment, as for a gift, favor, service

or courtesy).

verb

acknowledge , be grateful , be indebted , be obligated , be obliged , bless , bow down , give thanks , kiss * , praise , say thank you , show appreciation , show courtesy , show gratitude , smile on * , appreciate , blame , credit