How to say "heavyweight" in Japanese

• 大物おおものCommon
  nounCovers the figurative sense of 'heavyweight': an important, influential person or big shot in politics, business, or entertainment. This is the word you want when 'heavyweight' refers to status rather than weight.
  スミスさんは自分じぶんのことを大物おおものだと思おもっている。↗

  Mr Smith thinks that he's a big shot.
• ヘビー級ヘビーきゅう
  no-adjectiveCovers the literal sporting sense: the heavyweight division, especially in boxing. Outside of weight-class contexts this is not the word you want for figurative 'heavyweight'; use 大物 instead.

For the figurative sense—an influential or important person—use 大物; for the literal sporting sense of a weight class, especially boxing, use 「ヘビー級」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 大物おおものimportant person
• ヘビー級ヘビーきゅうheavyweight (esp. boxing)