Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I should enthusiasm you should enthusiasm she should enthusiasm we should enthusiasm you should enthusiasm they should enthusiasm
V-ing form
I should be enthusiasming you should be enthusiasming she should be enthusiasming we should be enthusiasming you should be enthusiasming they should be enthusiasming
Perfect
I should have enthusiasmed you should have enthusiasmed she should have enthusiasmed we should have enthusiasmed you should have enthusiasmed they should have enthusiasmed
V-ing perfect
I should have been enthusiasming you should have been enthusiasming she should have been enthusiasming we should have been enthusiasming you should have been enthusiasming they should have been enthusiasming
Negation
Simple form
I should not enthusiasm you should not enthusiasm she should not enthusiasm we should not enthusiasm you should not enthusiasm they should not enthusiasm
V-ing form
I should not be enthusiasming you should not be enthusiasming she should not be enthusiasming we should not be enthusiasming you should not be enthusiasming they should not be enthusiasming
Perfect
I should not have enthusiasmed you should not have enthusiasmed she should not have enthusiasmed we should not have enthusiasmed you should not have enthusiasmed they should not have enthusiasmed
V-ing perfect
I should not have been enthusiasming you should not have been enthusiasming she should not have been enthusiasming we should not have been enthusiasming you should not have been enthusiasming they should not have been enthusiasming
Interrogative form
Simple form
should I enthusiasm? should you enthusiasm? should she enthusiasm? should we enthusiasm? should you enthusiasm? should they enthusiasm?
V-ing form
should I be enthusiasming? should you be enthusiasming? should she be enthusiasming? should we be enthusiasming? should you be enthusiasming? should they be enthusiasming?
Perfect
should I have enthusiasmed? should you have enthusiasmed? should she have enthusiasmed? should we have enthusiasmed? should you have enthusiasmed? should they have enthusiasmed?
V-ing perfect
should I have been enthusiasming? should you have been enthusiasming? should she have been enthusiasming? should we have been enthusiasming? should you have been enthusiasming? should they have been enthusiasming?
Interro-negative form
Simple form
should I not enthusiasm? should you not enthusiasm? should she not enthusiasm? should we not enthusiasm? should you not enthusiasm? should they not enthusiasm?
V-ing form
should I not be enthusiasming? should you not be enthusiasming? should she not be enthusiasming? should we not be enthusiasming? should you not be enthusiasming? should they not be enthusiasming?
Perfect
should I not have enthusiasmed? should you not have enthusiasmed? should she not have enthusiasmed? should we not have enthusiasmed? should you not have enthusiasmed? should they not have enthusiasmed?
V-ing perfect
should I not have been enthusiasming? should you not have been enthusiasming? should she not have been enthusiasming? should we not have been enthusiasming? should you not have been enthusiasming? should they not have been enthusiasming?