thank / [unvoicedth]angk/ • v. [tr.] express gratitude to (someone), esp. 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 or command and implying a reproach or annoyance: I'll thank you not to interrupt me again.thank goodness (or God or heavens) an expression of relief: thank goodness no one was badly injured.thank one's lucky stars feel grateful for one's good fortune.