thank

 
Pronunciation: /θaŋk/

verb

[with object]
  • express gratitude to (someone), especially by saying ‘Thank you’: Mac thanked her for the meal and left
  • used ironically to assign blame or responsibility for something: you have only yourself to thank for the plight you are in

Phrases

I will thank you to do something

used to make a request conveying reproach or annoyance: I’ll thank you not to interrupt me again

thank goodness (or God or heavens)

used as an expression of relief: thank goodness no one was badly injured

thank one's lucky stars

feel grateful for one’s good fortune.

Origin:

Old English thancian, of Germanic origin; related to Dutch and German danken; compare with thanks