From Longman Dictionary of Contemporary Englishthank youˈthank you ●●●S1 interjection1THANKused to tell someone that you are grateful for something they have given you or done for you syn thanksMargaret handed him the butter. ‘Thank you, ’ said Samuel.Thank you very much, Brian.thank you for (doing) somethingIt’s good to see you, Mr Mathias. Thank you for coming.Dear Grandma, thank you for the lovely shirt you sent me for Christmas. ► Don’t say ‘I thank you’.2THANKused as a polite way of accepting something that someone has offered‘Can I give you a lift into town?’ ‘Oh, thank you.’3ANSWER/REPLYused when politely answering someone’s question‘How was your trip to Paris?’ ‘Very nice, thank you.’4 →no, thank you5ANNOYused at the end of a sentence when telling someone firmly that you do not want their help or advice and are slightly annoyed by itI can manage quite well on my own, thank you!
Examples from the Corpus
thank you• "Can I give you a ride home?" "Oh, thank you."• "How are you feeling today?" "Much better, thank you."• I can do it myself, thank you!• And that is enough democracy for a while, thank you.thank you for (doing) something• Thank you for helping me with my homework.• DearGrandma, Thank you very much for the birthdaycard and money.• We thank you for the blessing of family and friends, and for the lovingcare which surrounds us on every side.• I would like to thank you for the interest you have shown in this post.• And thank you for this day and make me grateful for what I've got.thank-youˈthank-you noun [countable]1THANKsomething you say or do in order to thank someoneThis present’s a thank-you for helping me last week.I just want to say a big thank-you to everyone who supported us.2 →thank-you letter/note/card