Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I ought to stiffer you ought to stiffer she ought to stiffer we ought to stiffer you ought to stiffer they ought to stiffer
V-ing form
I ought to be stiffering you ought to be stiffering she ought to be stiffering we ought to be stiffering you ought to be stiffering they ought to be stiffering
Perfect
I ought to have stiffered you ought to have stiffered she ought to have stiffered we ought to have stiffered you ought to have stiffered they ought to have stiffered
V-ing perfect
I ought to have been stiffering you ought to have been stiffering she ought to have been stiffering we ought to have been stiffering you ought to have been stiffering they ought to have been stiffering
Negation
Simple form
I oughtn't to stiffer you oughtn't to stiffer she oughtn't to stiffer we oughtn't to stiffer you oughtn't to stiffer they oughtn't to stiffer
V-ing form
I oughtn't to be stiffering you oughtn't to be stiffering she oughtn't to be stiffering we oughtn't to be stiffering you oughtn't to be stiffering they oughtn't to be stiffering
Perfect
I oughtn't to have stiffered you oughtn't to have stiffered she oughtn't to have stiffered we oughtn't to have stiffered you oughtn't to have stiffered they oughtn't to have stiffered
V-ing perfect
I oughtn't to have been stiffering you oughtn't to have been stiffering she oughtn't to have been stiffering we oughtn't to have been stiffering you oughtn't to have been stiffering they oughtn't to have been stiffering
Interrogative form
Simple form
ought to I stiffer? ought to you stiffer? ought to she stiffer? ought to we stiffer? ought to you stiffer? ought to they stiffer?
V-ing form
ought to I be stiffering? ought to you be stiffering? ought to she be stiffering? ought to we be stiffering? ought to you be stiffering? ought to they be stiffering?
Perfect
ought to I have stiffered? ought to you have stiffered? ought to she have stiffered? ought to we have stiffered? ought to you have stiffered? ought to they have stiffered?
V-ing perfect
ought to I have been stiffering? ought to you have been stiffering? ought to she have been stiffering? ought to we have been stiffering? ought to you have been stiffering? ought to they have been stiffering?
Interro-negative form
Simple form
oughtn't I to stiffer? oughtn't you to stiffer? oughtn't she to stiffer? oughtn't we to stiffer? oughtn't you to stiffer? oughtn't they to stiffer?
V-ing form
oughtn't I to be stiffering? oughtn't you to be stiffering? oughtn't she to be stiffering? oughtn't we to be stiffering? oughtn't you to be stiffering? oughtn't they to be stiffering?
Perfect
oughtn't I to have stiffered? oughtn't you to have stiffered? oughtn't she to have stiffered? oughtn't we to have stiffered? oughtn't you to have stiffered? oughtn't they to have stiffered?
V-ing perfect
oughtn't I to have been stiffering? oughtn't you to have been stiffering? oughtn't she to have been stiffering? oughtn't we to have been stiffering? oughtn't you to have been stiffering? oughtn't they to have been stiffering?