Say thank you.
Meaning: This means to ask someone to express gratitude or appreciation with words.
Choice of Words: Say is a verb that means to speak or utter words. Thank is a verb that means to express gratitude or appreciation. You is the second-person singular pronoun, referring to the person being spoken to. When you put them together, "Say thank you" is an instruction asking someone to express gratitude or appreciation with words.
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Related Expressions