| Form | Conjugation | 
|---|---|
| Plain? | ほころぶ | 
| Past? | ほころんだ | 
| Negative? | ほころばない | 
| Volitional? | ほころぼう | 
| Imperative? | ほころべ | 
| Polite imperative? | ほころびなさい | 
| 〜たい? | ほころびたい | 
| Conditional (〜えば)? | ほころべば | 
| Conditional (〜たら)? | ほころんだら | 
| Potential? | ほころべる | 
| Passive? | ほころばれる | 
| Causative? | ほころばせる | 
| Prohibitive? | ほころぶな | 
| 〜ます? | ほころびます |