may invalidate
Verbe régulier : invalidate - invalidated- invalidated
Traduction française : invalider - infirmer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may invalidate
you may invalidate
he may invalidate
we may invalidate
you may invalidate
they may invalidate 	I may be invalidating
you may be invalidating
he may be invalidating
we may be invalidating
you may be invalidating
they may be invalidating	I may have invalidated
you may have invalidated
he may have invalidated
we may have invalidated
you may have invalidated
they may have invalidated	I may have been invalidating
you may have been invalidating
he may have been invalidating
we may have been invalidating
you may have been invalidating
they may have been invalidating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mayn't invalidate
you mayn't invalidate
he mayn't invalidate
we mayn't invalidate
you mayn't invalidate
they mayn't invalidate 	I mayn't be invalidating
you mayn't be invalidating
he mayn't be invalidating
we mayn't be invalidating
you mayn't be invalidating
they mayn't be invalidating	I mayn't have invalidated
you mayn't have invalidated
he mayn't have invalidated
we mayn't have invalidated
you mayn't have invalidated
they mayn't have invalidated	I mayn't have been invalidating
you mayn't have been invalidating
he mayn't have been invalidating
we mayn't have been invalidating
you mayn't have been invalidating
they mayn't have been invalidating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I invalidate?
may you invalidate?
may he invalidate?
may we invalidate?
may you invalidate?
may they invalidate? 	may I be invalidating?
may you be invalidating?
may he be invalidating?
may we be invalidating?
may you be invalidating?
may they be invalidating? 	may I have invalidated?
may you have invalidated?
may he have invalidated?
may we have invalidated?
may you have invalidated?
may they have invalidated? 	may I have been invalidating?
may you have been invalidating?
may he have been invalidating?
may we have been invalidating?
may you have been invalidating?
may they have been invalidating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mayn't I invalidate?
mayn't you invalidate?
mayn't he invalidate?
mayn't we invalidate?
mayn't you invalidate?
mayn't they invalidate? 	mayn't I be invalidating?
mayn't you be invalidating?
mayn't he be invalidating?
mayn't we be invalidating?
mayn't you be invalidating?
mayn't they be invalidating? 	mayn't I have invalidated?
mayn't you have invalidated?
mayn't he have invalidated?
mayn't we have invalidated?
mayn't you have invalidated?
mayn't they have invalidated? 	mayn't I have been invalidating?
mayn't you have been invalidating?
mayn't he have been invalidating?
mayn't we have been invalidating?
mayn't you have been invalidating?
mayn't they have been invalidating?