thank

verb6

1. •
   to express a grateful feeling to someone for their help or kindness

   • She thanked him for the lift.
2. •
   (rare) To express appreciation or gratitude for (something).
3. •
   (figurative) Chiefly followed by for: to credit or hold (someone or something) responsible, especially for something negative; to blame.

   • We can thank global warming for this freak weather.
4. •
   In the future tense in the form one will thank someone to do something, chiefly expressing a command or criticism: to request that (someone) do something.

   • I’ll thank you not to smoke in my house!
5. •
   (figurative) To respond to (someone) out of, or as if out of, appreciation or gratitude.

   • I should summon my lord from the Queen's royal presence to do your business, should I?—I were like to be thanked with a horse-whip. — 1821
6. •
   (no longer used) To express gratitude.