Some compliment nouns like congratulations, best wishes, thanks, or cheers are always plural in form, but I have seen singular forms like "congratulate them" or "thank them".

In these 'thank' and 'congratulate' are singular. Why? Does 'cheers' or 'best wishes' also have singular form?


The word congratulate in the phrase "congratulate them" acts as a verb, not a noun.

As a verb, congratulates is not the plural of congratulate. The trailing "s" signifies singular agreement, and the form without a trailing "s" signifies plural agreement:

  • Jack (singular) congratulates Jill.
  • They (plural) congratulate each other.

Likewise for cheer and wish.

  • When you thank (verb) someone, you give thanks (plural noun) to them. We never speak of a thank. Feb 8 '20 at 9:02

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