| Present "quash" | I | quash | |
| Present Continuous "quash" | I | am quashing | |
| Simple past "quash" | I | quashed | |
| Past Continuous "quash" | I | was quashing | |
| Present perfect "quash" | I | have quashed | |
| Present perfect continuous "quash" | I | have been quashing | |
| Past perfect "quash" | I | had quashed | |
| Past perfect continuous "quash" | I | had been quashing | |
| Future "quash" | I | will quash | |
| Future continuous "quash" | I | will be quashing | |
| Future perfect "quash" | I | will have quashed | |
| Future perfect continuous "quash" | I | will have been quashing |