| Form | Conjugation | 
|---|---|
| Plain? | 落ち窪む | 
| Past? | 落ち窪んだ | 
| Negative? | 落ち窪まない | 
| Volitional? | 落ち窪もう | 
| Imperative? | 落ち窪め | 
| Polite imperative? | 落ち窪みなさい | 
| 〜たい? | 落ち窪みたい | 
| Conditional (〜えば)? | 落ち窪めば | 
| Conditional (〜たら)? | 落ち窪んだら | 
| Potential? | 落ち窪める | 
| Passive? | 落ち窪まれる | 
| Causative? | 落ち窪ませる | 
| Prohibitive? | 落ち窪むな | 
| 〜ます? | 落ち窪みます |