Regular verb: stiffen - stiffened - stiffened
Present | Present continuous | Preterite | Preterite continuous |
I do not stiffen you do not stiffen he does not stiffen we do not stiffen you do not stiffen they do not stiffen | I am not stiffening you are not stiffening he is not stiffening we are not stiffening you are not stiffening they are not stiffening | I did not stiffen you did not stiffen he did not stiffen we did not stiffen you did not stiffen they did not stiffen | I was not stiffening you were not stiffening he was not stiffening we were not stiffening you were not stiffening they were not stiffening |
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous |
I have not stiffened you have not stiffened he has not stiffened we have not stiffened you have not stiffened they have not stiffened | I have not been stiffening you have not been stiffening he has not been stiffening we have not been stiffening you have not been stiffening they have not been stiffening | I had not stiffened you had not stiffened he had not stiffened we had not stiffened you had not stiffened they had not stiffened | I had not been stiffening you had not been stiffening he had not been stiffening we had not been stiffening you had not been stiffening they had not been stiffening |
Future | Future continuous | Future perfect | Future perfect continuous |
I will not stiffen you will not stiffen he will not stiffen we will not stiffen you will not stiffen they will not stiffen | I will not be stiffening you will not be stiffening he will not be stiffening we will not be stiffening you will not be stiffening they will not be stiffening | I will not have stiffened you will not have stiffened he will not have stiffened we will not have stiffened you will not have stiffened they will not have stiffened | I will not have been stiffening you will not have been stiffening he will not have been stiffening we will not have been stiffening you will not have been stiffening they will not have been stiffening |
Present | Present continuous | Past | Past continuous |
I would not stiffen you would not stiffen he would not stiffen we would not stiffen you would not stiffen they would not stiffen | I would not be stiffening you would not be stiffening he would not be stiffening we would not be stiffening you would not be stiffening they would not be stiffening | I would not have stiffened you would not have stiffened he would not have stiffened we would not have stiffened you would not have stiffened they would not have stiffened | I would not have been stiffening you would not have been stiffening he would not have been stiffening we would not have been stiffening you would not have been stiffening they would not have been stiffening |
Infinitive | Imperative |
Infinitive | Imperative | ||
to stiffen | do not stiffen Let's not stiffen do not stiffen |
Present | Past | ||
stiffening | stiffened |