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