English verb conjugation
TO STIFFEN
Regular verb: stiffen - stiffened - stiffened
Present | Present continuous | Preterite | Preterite continuous |
| do I stiffen? do you stiffen? does she stiffen? do we stiffen? do you stiffen? do they stiffen? | am I stiffening? are you stiffening? is she stiffening? are we stiffening? are you stiffening? are they stiffening? | did I stiffen? did you stiffen? did she stiffen? did we stiffen? did you stiffen? did they stiffen? | was I stiffening? were you stiffening? was she stiffening? were we stiffening? were you stiffening? were they stiffening? |
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous |
| have I stiffened? have you stiffened? has she stiffened? have we stiffened? have you stiffened? have they stiffened? | have I been stiffening? have you been stiffening? has she been stiffening? have we been stiffening? have you been stiffening? have they been stiffening? | had I stiffened? had you stiffened? had she stiffened? had we stiffened? had you stiffened? had they stiffened? | had I been stiffening? had you been stiffening? had she been stiffening? had we been stiffening? had you been stiffening? had they been stiffening? |
Future | Future continuous | Future perfect | Future perfect continuous |
| will I stiffen? will you stiffen? will she stiffen? will we stiffen? will you stiffen? will they stiffen? | will I be stiffening? will you be stiffening? will she be stiffening? will we be stiffening? will you be stiffening? will they be stiffening? | will I have stiffened? will you have stiffened? will she have stiffened? will we have stiffened? will you have stiffened? will they have stiffened? | will I have been stiffening? will you have been stiffening? will she have been stiffening? will we have been stiffening? will you have been stiffening? will they have been stiffening? |
Present | Present continuous | Past | Past continuous |
| would I stiffen? would you stiffen? would she stiffen? would we stiffen? would you stiffen? would they stiffen? | would I be stiffening? would you be stiffening? would she be stiffening? would we be stiffening? would you be stiffening? would they be stiffening? | would I have stiffened? would you have stiffened? would she have stiffened? would we have stiffened? would you have stiffened? would they have stiffened? | would I have been stiffening? would you have been stiffening? would she have been stiffening? would we have been stiffening? would you have been stiffening? would they have been stiffening? |
Infinitive | Imperative |
Infinitive | Imperative | ||
| to stiffen | - - - |
Present | Past | ||
| stiffening | stiffened |