音読み: タイ・タ
訓読み: ふとい・ふとる
画数: 4
部首: だい（大）
Meaning
Thick / Fat / Large-scale
- Basic forms
- 太る — to gain weight / base form
- 太ります — gain weight (polite) / masu form
- 太った — gained weight / ta form
- 太って — gaining weight and … / te-form
- 太らない — do not gain weight / negative
- 太れば — if (someone) gains weight / conditional
- 太れ・太りなさい — gain weight! (rare / joking tone) / imperative
- Other common forms
- 太りたい — want to gain weight / 〜たい form
- 太れる — can gain weight (possible) / potential
- 太れない — can’t gain weight / negative potential
- 太ろう — let’s gain weight; I’ll gain weight / 〜よう form
- 太らなかった — didn’t gain weight / past negative
- 太っている — is gaining weight; has gained weight (state) / progressive / state
太る（ふとる） is a godan verb ending in る.
It conjugates like: 太る → 太り → 太って → 太った, and the negative is 太らない.
In everyday conversation, 太った often means “(I) gained weight.”
- 太陽 — sun
- 太平洋 — Pacific Ocean
- 太い — thick / fat
- 太字 — bold text
- 太古 — ancient times
太 comes from 大 (big) with a small dot — emphasizing “extra” size or thickness. It can describe physical thickness (太い), gaining weight (太る), or large-scale ideas like 太陽 (the sun) and 太平洋 (the Pacific).