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Other forms without ? | remove negation | male gender | remove contraction
Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation TO STIFFEN

Regular verb: stiffen - stiffened - stiffened

Indicative

Present
don't I stiffen?
don't you stiffen?
doesn't she stiffen?
don't we stiffen?
don't you stiffen?
don't they stiffen?
Present continuous
am I not stiffening?
aren't you stiffening?
isn't she stiffening?
aren't we stiffening?
aren't you stiffening?
aren't they stiffening?
Preterite
didn't I stiffen?
didn't you stiffen?
didn't she stiffen?
didn't we stiffen?
didn't you stiffen?
didn't they stiffen?
Preterite continuous
wasn't I stiffening?
weren't you stiffening?
wasn't she stiffening?
weren't we stiffening?
weren't you stiffening?
weren't they stiffening?
Present perfect
haven't I stiffened?
haven't you stiffened?
hasn't she stiffened?
haven't we stiffened?
haven't you stiffened?
haven't they stiffened?
Present perfect continuous
haven't I been stiffening?
haven't you been stiffening?
hasn't she been stiffening?
haven't we been stiffening?
haven't you been stiffening?
haven't they been stiffening?
Pluperfect
hadn't I stiffened?
hadn't you stiffened?
hadn't she stiffened?
hadn't we stiffened?
hadn't you stiffened?
hadn't they stiffened?
Pluperfect continuous
hadn't I been stiffening?
hadn't you been stiffening?
hadn't she been stiffening?
hadn't we been stiffening?
hadn't you been stiffening?
hadn't they been stiffening?
Future
won't I stiffen?
won't you stiffen?
won't she stiffen?
won't we stiffen?
won't you stiffen?
won't they stiffen?
Future continuous
won't I be stiffening?
won't you be stiffening?
won't she be stiffening?
won't we be stiffening?
won't you be stiffening?
won't they be stiffening?
Future perfect
won't I have stiffened?
won't you have stiffened?
won't she have stiffened?
won't we have stiffened?
won't you have stiffened?
won't they have stiffened?
Future perfect continuous
won't I have been stiffening?
won't you have been stiffening?
won't she have been stiffening?
won't we have been stiffening?
won't you have been stiffening?
won't they have been stiffening?

Conditional

Present
wouldn't I stiffen?
wouldn't you stiffen?
wouldn't she stiffen?
wouldn't we stiffen?
wouldn't you stiffen?
wouldn't they stiffen?
Present continuous
wouldn't I be stiffening?
wouldn't you be stiffening?
wouldn't she be stiffening?
wouldn't we be stiffening?
wouldn't you be stiffening?
wouldn't they be stiffening?
Past
wouldn't I have stiffened?
wouldn't you have stiffened?
wouldn't she have stiffened?
wouldn't we have stiffened?
wouldn't you have stiffened?
wouldn't they have stiffened?
Past continuous
wouldn't I have been stiffening?
wouldn't you have been stiffening?
wouldn't she have been stiffening?
wouldn't we have been stiffening?
wouldn't you have been stiffening?
wouldn't they have been stiffening?

Imperative

Imperative
-
-
-
 
 
 

Infinitive

Infinitive
to stiffen
 
 
 

Participle

Present
stiffening
Past
stiffened