| Form | Conjugation | 
|---|---|
| Plain? | 冗談がすぎる | 
| Past? | 冗談がすぎた | 
| Negative? | 冗談がすぎない | 
| Volitional? | 冗談がすぎよう | 
| Imperative? | 冗談がすぎろ | 
| Polite imperative? | 冗談がすぎなさい | 
| 〜たい? | 冗談がすぎたい | 
| Conditional (〜えば)? | 冗談がすぎれば | 
| Conditional (〜たら)? | 冗談がすぎたら | 
| Potential? | 冗談がすぎれる | 
| Passive? | 冗談がすぎられる | 
| Causative? | 冗談がすぎさせる | 
| Prohibitive? | 冗談がすぎるな | 
| 〜ます? | 冗談がすぎます |