- expressing one's gratitude or thanks: a thank-you note.
- an expression of thanks, as by saying “thank you”: I never got so much as a thank-you for helping him.
Origin of thank-you
1785–95 for def 2; noun and adj. use of verb phrase thank you
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for thank-you
If you smoked Colombian weed in the 1970s and 1980s, I owe you a thank-you card.Dealing With Dad the Dealer
April 9, 2014
The recreation therapy department afterward sent the club a thank-you note.Are Motorcycle Clubs a Public Menace?
October 8, 2013
With the NYPD under fire for its stop-and-frisk policy, Michael Daly says we owe them a thank-you.VMAs Red Carpet in Brooklyn Wouldn’t Have Been Possible Without NYPD
August 27, 2013
Fans of the new system should drop a thank-you note to Justice Roberts and the four other Supremes who decided Citizens United.Mitt Romney Clinches: What We Learned From 2012 Republican Race
April 25, 2012
Why would colleges value something as simple as a thank-you note so strongly?College Admissions' Secret Strategy
September 26, 2010
Well, which of 'em are you going to have for yourself, just by way of thank-you, Billy?A Case in Camera</p>
He had said his "Good-bye and thank-you for all your kindness!"Pelle the Conqueror, Complete
Martin Anderson Nexo
Kiss him, and say thank-you quickly, or there will be no story when you are in bed.Once Aboard The Lugger
Arthur Stuart-Menteth Hutchinson
She served him unwillingly and grabbed his occasional Trinkgelds with scarcely a thank-you.Villa Elsa
She's not without romance—and I wouldn't give a thank-you for her if she were.Madame Flirt
Charles E. Pearce