Part of speech: Adverb
ahead of time
Example: in anticipation; when you pay ahead (or in advance) you receive a discount; We like to plan ahead; should have made reservations beforehand
Advance, Ahead, Beforehand, In advance
The word "beforehand" comes from Middle English biforhand.
before – A related word in the same word family.
hand – A related word in the same word family.
Middle English was a melting pot where Germanic, French, and Latin words competed and blended.