hard

Từ điển Oxford Learners Wordfinder Dictionary

EASY/DIFFICULT

• Từ đồng nghĩa / Synonyms:
  tough, strong, intemperate, heavy, concentrated, unvoiced, voiceless, surd, knockout, severe, difficult, heavily, intemperately, severely, firmly
• Từ trái nghĩa / Antonyms:
  soft, diffuse, diffused, voiced, sonant, easy, lightly