| Form | Conjugation | 
|---|---|
| Plain? | 言置く | 
| Past? | 言置いた | 
| Negative? | 言置かない | 
| Volitional? | 言置こう | 
| Imperative? | 言置け | 
| Polite imperative? | 言置きなさい | 
| 〜たい? | 言置きたい | 
| Conditional (〜えば)? | 言置けば | 
| Conditional (〜たら)? | 言置いたら | 
| Potential? | 言置ける | 
| Passive? | 言置かれる | 
| Causative? | 言置かせる | 
| Prohibitive? | 言置くな | 
| 〜ます? | 言置きます |