心細い (kokorobosoi) conjugation
helpless, hopeless, discouraging
心細い (こころぼそい, kokorobosoi) is an i-adjective. I-adjectives carry their own tense: drop the final い and the endings attach straight to the stem. No だ, no です needed to make a complete sentence.
Conjugation table
| Form | Plain (casual) | Polite (~です) | When you use it |
|---|---|---|---|
| Dictionary / plain | 心細い kokorobosoi | 心細いです kokorobosoidesu | The form you look up. Also the casual “is ~”. |
| Negative | 心細くない kokorobosokunai | 心細くないです kokorobosokunaidesu | “is not ~”. |
| Past | 心細かった kokorobosokatta | 心細かったです kokorobosokattadesu | “was ~”. |
| Past negative | 心細くなかった kokorobosokunakatta | 心細くなかったです kokorobosokunakattadesu | “was not ~”. |
| Te-form | 心細くて kokorobosokute | — | Links to the next clause: “~ and …”. |
| Adverb | 心細く kokorobosoku | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 心細い〜 kokorobosoi〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 心細ければ kokorobosokereba | — | “if it is ~”. |
| Conditional (~たら) | 心細かったら kokorobosokattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 心細くなる kokorobosokunaru | 心細くなります kokorobosokunarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 心細すぎる kokorobososugiru | 心細すぎます kokorobososugimasu | “too ~”. |
| Looks ~ (~そう) | 心細そう kokorobososou | 心細そうです kokorobososoudesu | “looks / seems ~” from appearance. |
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Why it conjugates this way
I-adjectives carry their own tense: drop the final い and the endings attach straight to the stem. No だ, no です needed to make a complete sentence.
See the full rules in the adjective conjugation guide.