ダイエットdaietto

1. noun, suru verb, intransitive verbdiet; dieting
   「太ふとっている人ひとはみんなダイエットすべきだと思おもう」「あなた、私のことを言いってるの」↗

   "I think all fat people should go on a diet". "Are you referring to me"?
2. noun, suru verb, intransitive verblosing weight (through dieting, exercise, etc.)
   少すこしは働はたらけ。ダイエットになるぞ。↗

   Do a little work! You'll lose some weight.

• Related減食げんしょくWrittenA written word for cutting down the amount of food; examples are few. It also names the punishment of reducing a prisoner's rations.
• Related食事制限しょくじせいげんNeutralRestricting the types or amount of food one eats, usually for health or medical reasons, as in 「医師の食事制限」; 「ダイエット」 is specifically aimed at losing weight.
• Related節食せっしょくWrittenA written/formal word for deliberately eating less, as in 「節食する」. It covers only reduced eating, not exercise, so it is narrower than 「ダイエット」.
• Antonym増量ぞうりょうNeutralIncreasing quantity or body weight; the opposite of 「ダイエット」 in the sense of gaining rather than losing weight.

Use 「ダイエット」 for losing weight through diet or exercise, as in 「ダイエット中」 or 「ダイエット食品」. For medically ordered restrictions say 「食事制限」; 「節食」 and 「減食」 are written words for eating less; 「増量」 is the opposite.

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

1. 瘦やせるために食事しょくじを制限せいげんすること。また食事しょくじ制限せいげんや運動うんどうなど、瘦やせるための活動かつどう。