Thanker

verb (used with object)
1.
to express gratitude, appreciation, or acknowledgment to:
She thanked them for their hospitality.
noun
2.
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.
interjection
3.
thanks, (used as an informal expression of gratitude, appreciation, or acknowledgment).
Idioms
4.
have oneself to thank, to be personally to blame; have the responsibility:
The citizens have only themselves to thank for corruption in government.
5.
no thanks to, (used to express annoyance) not owing to:
I caught my flight after all, no thanks to you.
6.
thank God, (used as an interjection to express relief, thankfulness, etc.)
Also, thank goodness, thank heaven.
7.
thanks to, (used to express gratitude or blame) because of; owing to: Thanks to good organization and hard work, the benefit concert was a great success.
The case went poorly thanks to the lawyer’s incompetence.
8.
thank you, (used as an interjection to express gratitude, appreciation, or acknowledgment, as for a gift, favor, service, or courtesy).
verb (transitive)
1.
to convey feelings of gratitude to
2.
to hold responsible: he has his creditors to thank for his bankruptcy
3.
used in exclamations of relief: thank goodness, thank God
4.
I’ll thank you to, used ironically to intensify a command, request, etc: I’ll thank you to mind your own business