| Form | Conjugation | 
|---|---|
| Plain? | し損じる | 
| Past? | し損じた | 
| Negative? | し損じない | 
| Volitional? | し損じよう | 
| Imperative? | し損じろ | 
| Polite imperative? | し損じなさい | 
| 〜たい? | し損じたい | 
| Conditional (〜えば)? | し損じれば | 
| Conditional (〜たら)? | し損じたら | 
| Potential? | し損じれる | 
| Passive? | し損じられる | 
| Causative? | し損じさせる | 
| Prohibitive? | し損じるな | 
| 〜ます? | し損じます |