must debase
Verbe régulier : debase - debased- debased
Traduction française : avilir - dévaloriser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must debase
you must debase
he must debase
we must debase
you must debase
they must debase 	I must be debasing
you must be debasing
he must be debasing
we must be debasing
you must be debasing
they must be debasing	I must have debased
you must have debased
he must have debased
we must have debased
you must have debased
they must have debased	I must have been debasing
you must have been debasing
he must have been debasing
we must have been debasing
you must have been debasing
they must have been debasing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't debase
you mustn't debase
he mustn't debase
we mustn't debase
you mustn't debase
they mustn't debase 	I mustn't be debasing
you mustn't be debasing
he mustn't be debasing
we mustn't be debasing
you mustn't be debasing
they mustn't be debasing	I mustn't have debased
you mustn't have debased
he mustn't have debased
we mustn't have debased
you mustn't have debased
they mustn't have debased	I mustn't have been debasing
you mustn't have been debasing
he mustn't have been debasing
we mustn't have been debasing
you mustn't have been debasing
they mustn't have been debasing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I debase?
must you debase?
must he debase?
must we debase?
must you debase?
must they debase? 	must I be debasing?
must you be debasing?
must he be debasing?
must we be debasing?
must you be debasing?
must they be debasing? 	must I have debased?
must you have debased?
must he have debased?
must we have debased?
must you have debased?
must they have debased? 	must I have been debasing?
must you have been debasing?
must he have been debasing?
must we have been debasing?
must you have been debasing?
must they have been debasing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I debase?
mustn't you debase?
mustn't he debase?
mustn't we debase?
mustn't you debase?
mustn't they debase? 	mustn't I be debasing?
mustn't you be debasing?
mustn't he be debasing?
mustn't we be debasing?
mustn't you be debasing?
mustn't they be debasing? 	mustn't I have debased?
mustn't you have debased?
mustn't he have debased?
mustn't we have debased?
mustn't you have debased?
mustn't they have debased? 	mustn't I have been debasing?
mustn't you have been debasing?
mustn't he have been debasing?
mustn't we have been debasing?
mustn't you have been debasing?
mustn't they have been debasing?