must

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

1. a necessary or essential thing
- seat belts are an absolute must
• Hypernyms:
necessity, essential, requirement, requisite, necessary
2. grape juice before or during fermentation
• Hypernyms:
grape juice
3. the quality of smelling or tasting old or stale or mouldy
• Syn:
mustiness, moldiness
• Derivationally related forms:
moldy (for: moldiness), musty, musty (for: mustiness)
• Hypernyms:
staleness

II - adjective

highly recommended
- a book that is must reading
• Similar to:
essential

• Từ đồng nghĩa / Synonyms:
  must(a), mustiness, moldiness