to stiffen
Regular verb: stiffen - stiffened- stiffened

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
 do I not stiffen?
do you not stiffen?
doeshe not stiffen?
do we not stiffen?
do you not stiffen?
do they not stiffen? 	amI not stiffening?
areyou not stiffening?
ishe not stiffening?
arewe not stiffening?
areyou not stiffening?
arethey not stiffening? 	did I not stiffen?
did you not stiffen?
did he not stiffen?
did we not stiffen?
did you not stiffen?
did they not stiffen? 	wasI not stiffening?
wereyou not stiffening?
washe not stiffening?
werewe not stiffening?
wereyou not stiffening?
werethey not stiffening? 	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
 have I not stiffened?
have you not stiffened?
hashe not stiffened?
have we not stiffened?
have you not stiffened?
have they not stiffened? 	 have I not been stiffening?
have you not been stiffening?
hashe not been stiffening?
have we not been stiffening?
have you not been stiffening?
have they not been stiffening? 	had I not stiffened?
had you not stiffened?
had he not stiffened?
had we not stiffened?
had you not stiffened?
had they not stiffened? 	had I not been stiffening?
had you not been stiffening?
had he not been stiffening?
had we not been stiffening?
had you not been stiffening?
had they not been stiffening? 	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
will I not stiffen?
will you not stiffen?
will he not stiffen?
will we not stiffen?
will you not stiffen?
will they not stiffen? 	will I not be stiffening?
will you not be stiffening?
will he not be stiffening?
will we not be stiffening?
will you not be stiffening?
will they not be stiffening? 	will I not have stiffened?
will you not have stiffened?
will he not have stiffened?
will we not have stiffened?
will you not have stiffened?
will they not have stiffened? 	will I not have been stiffening?
will you not have been stiffening?
will he not have been stiffening?
will we not have been stiffening?
will you not have been stiffening?
will they not have been stiffening? 	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
would I not stiffen?
would you not stiffen?
would he not stiffen?
would we not stiffen?
would you not stiffen?
would they not stiffen? 	would I not be stiffening?
would you not be stiffening?
would he not be stiffening?
would we not be stiffening?
would you not be stiffening?
would they not be stiffening? 	would I not have stiffened?
would you not have stiffened?
would he not have stiffened?
would we not have stiffened?
would you not have stiffened?
would they not have stiffened? 	would I not have been stiffening?
would you not have been stiffening?
would he not have been stiffening?
would we not have been stiffening?
would you not have been stiffening?
would they not have been stiffening? 	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to stiffen 	 	-
-
- 	 	

Participle 	
Present 	Past 	 	 	
stiffening	stiffened