Verb conjugation
Conjugate To stiffen in English
Regular verb
stiffen, stiffened, stiffened
Indicative
Present (simple)
- I stiffen
- you stiffen
- he stiffens
- we stiffen
- you stiffen
- they stiffen
Present progressive / continuous
- I am stiffening
- you are stiffening
- he is stiffening
- we are stiffening
- you are stiffening
- they are stiffening
Past (simple)
- I stiffened
- you stiffened
- he stiffened
- we stiffened
- you stiffened
- they stiffened
Past progressive / continuous
- I was stiffening
- you were stiffening
- he was stiffening
- we were stiffening
- you were stiffening
- they were stiffening
Present perfect (simple)
- I have stiffened
- you have stiffened
- he has stiffened
- we have stiffened
- you have stiffened
- they have stiffened
Present perfect progressive / continuous
- I have been stiffening
- you have been stiffening
- he has been stiffening
- we have been stiffening
- you have been stiffening
- they have been stiffening
Past perfect
- I had stiffened
- you had stiffened
- he had stiffened
- we had stiffened
- you had stiffened
- they had stiffened
Past perfect progressive / continuous
- I had been stiffening
- you had been stiffening
- he had been stiffening
- we had been stiffening
- you had been stiffening
- they had been stiffening
Future
- I will stiffen
- you will stiffen
- he will stiffen
- we will stiffen
- you will stiffen
- they will stiffen
Future progressive / continuous
- I will be stiffening
- you will be stiffening
- he will be stiffening
- we will be stiffening
- you will be stiffening
- they will be stiffening
Future perfect
- I will have stiffened
- you will have stiffened
- he will have stiffened
- we will have stiffened
- you will have stiffened
- they will have stiffened
Future perfect continuous
- I will have been stiffening
- you will have been stiffening
- he will have been stiffening
- we will have been stiffening
- you will have been stiffening
- they will have been stiffening
Conditional
Simple
- I would stiffen
- you would stiffen
- he would stiffen
- we would stiffen
- you would stiffen
- they would stiffen
Progressive
- I would be stiffening
- you would be stiffening
- he would be stiffening
- we would be stiffening
- you would be stiffening
- they would be stiffening
Perfect
- I would have stiffened
- you would have stiffened
- he would have stiffened
- we would have stiffened
- you would have stiffened
- they would have stiffened
Perfect progressive
- I would have been stiffening
- you would have been stiffening
- he would have been stiffening
- we would have been stiffening
- you would have been stiffening
- they would have been stiffening
Infinitive
Infinitive
- to stiffen
Imperative
Imperative
- stiffen
- Let's stiffen
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