How to say "lightweight" in Japanese

Choosing the right word
  • no-adjectiveA katakana borrowing of the English word, covering the general sense of being light in weight; it is at home in English-influenced contexts such as product descriptions, and is a less common choice.
  • ライト級ライトきゅう
    nounThe lightweight weight class in combat sports such as boxing; 級 means 'class' or 'division'. It matches only this classification sense of 'lightweight', not the general sense of weighing little.

Choose by sense: 「ライト級」 is the lightweight weight class in combat sports such as boxing, while 「ライトウェイト」 is the direct English loanword for the general 'light in weight' sense; both are less common choices.

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

Japanese equivalents

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