essential

Từ điển Oxford Learners Wordfinder Dictionary

- very important IMPORTANT
- something that you must have NEED
- something that you must do MUST

• Từ đồng nghĩa / Synonyms:
  substantive, all-important(a), all important(p), crucial, of the essence(p), indispensable, necessity, requirement, requisite, necessary
• Từ trái nghĩa / Antonyms:
  adjective, procedural, inessential, unessential, nonessential