Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I ought to regret regret you ought to regret regret he ought to regret regret we ought to regret regret you ought to regret regret they ought to regret regret
V-ing form
I ought to be regret regreting you ought to be regret regreting he ought to be regret regreting we ought to be regret regreting you ought to be regret regreting they ought to be regret regreting
Perfect
I ought to have regret regreted you ought to have regret regreted he ought to have regret regreted we ought to have regret regreted you ought to have regret regreted they ought to have regret regreted
V-ing perfect
I ought to have been regret regreting you ought to have been regret regreting he ought to have been regret regreting we ought to have been regret regreting you ought to have been regret regreting they ought to have been regret regreting
Negation
Simple form
I ought not to regret regret you ought not to regret regret he ought not to regret regret we ought not to regret regret you ought not to regret regret they ought not to regret regret
V-ing form
I ought not to regret regreting you ought not to regret regreting he ought not to regret regreting we ought not to regret regreting you ought not to regret regreting they ought not to regret regreting
Perfect
I ought not to have regret regreted you ought not to have regret regreted he ought not to have regret regreted we ought not to have regret regreted you ought not to have regret regreted they ought not to have regret regreted
V-ing perfect
I ought not to have been regret regreting you ought not to have been regret regreting he ought not to have been regret regreting we ought not to have been regret regreting you ought not to have been regret regreting they ought not to have been regret regreting
Interrogative form
Simple form
ought to I regret regret? ought to you regret regret? ought to he regret regret? ought to we regret regret? ought to you regret regret? ought to they regret regret?
V-ing form
ought to I be regret regreting? ought to you be regret regreting? ought to he be regret regreting? ought to we be regret regreting? ought to you be regret regreting? ought to they be regret regreting?
Perfect
ought to I have regret regreted? ought to you have regret regreted? ought to he have regret regreted? ought to we have regret regreted? ought to you have regret regreted? ought to they have regret regreted?
V-ing perfect
ought to I have been regret regreting? ought to you have been regret regreting? ought to he have been regret regreting? ought to we have been regret regreting? ought to you have been regret regreting? ought to they have been regret regreting?
Interro-negative form
Simple form
ought I not to regret regret? ought you not to regret regret? ought he not to regret regret? ought we not to regret regret? ought you not to regret regret? ought they not to regret regret?
V-ing form
ought I not to be regret regreting? ought you not to be regret regreting? ought he not to be regret regreting? ought we not to be regret regreting? ought you not to be regret regreting? ought they not to be regret regreting?
Perfect
ought I not to have regret regreted? ought you not to have regret regreted? ought he not to have regret regreted? ought we not to have regret regreted? ought you not to have regret regreted? ought they not to have regret regreted?
V-ing perfect
ought I not to have been regret regreting? ought you not to have been regret regreting? ought he not to have been regret regreting? ought we not to have been regret regreting? ought you not to have been regret regreting? ought they not to have been regret regreting?