beforehand

Từ điển WordNet v3.1 - WordNet Dictionary

I - adjective

being ahead of time or need
- gave advance warning
- was beforehand with her report
• Syn:
advance
• Similar to:
early

II - adverb

ahead of time;
in anticipation
- when you pay ahead (or in advance) you receive a discount
- We like to plan ahead
- should have made reservations beforehand
• Syn:
ahead, in advance

• Từ đồng nghĩa / Synonyms:
  advance(a), beforehand(p), ahead, in advance