beforehand • (adverb or adjective) \bih-FOR-hand\

hear it again hear it again

1 : in anticipation : in advance
2 : ahead of time : early

Example sentence:
We'll need to get tickets to the baseball game beforehand—it's likely they won't have any left by the time we get to the stadium.

Etymology:
As far as we know, there's no stroke in tennis called a "beforehand," so C is incorrect, and both A and D call for the word "before." "Beforehand" is somewhat similar in meaning to "before"; but where did the "hand" part come from? It is possible that the "hand" is short for "that which is at hand." There is a similar phrase in Latin that may have been translated into English as "beforehand." Some scholars also theorize that it comes from the idea of one person working ahead of, or "before the hand of," someone else.

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