thanked; thanking; thanks
Definition of thank
1
: to express gratitude to
thanked her for the present
—used in the phrase thank you usually without a subject to politely express gratitude thank you for your consideration or sometimes to emphasize a preceding statement especially by implying that it is not subject to question likes her job just fine, thank you —used in such phrases as thank God, thank goodness usually without a subject to express gratitude or more often only the speaker's or writer's pleasure or satisfaction in something
2
: to hold responsible
had only himself to thank for his loss
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Merriam-Webster unabridged
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Time Traveler for thank
The first known use of thank was before the 12th century
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