| Form | Conjugation | 
|---|---|
| Plain? | せきこむ | 
| Past? | せきこんだ | 
| Negative? | せきこまない | 
| Volitional? | せきこもう | 
| Imperative? | せきこめ | 
| Polite imperative? | せきこみなさい | 
| 〜たい? | せきこみたい | 
| Conditional (〜えば)? | せきこめば | 
| Conditional (〜たら)? | せきこんだら | 
| Potential? | せきこめる | 
| Passive? | せきこまれる | 
| Causative? | せきこませる | 
| Prohibitive? | せきこむな | 
| 〜ます? | せきこみます |