will decease
Regular verb: decease - deceased- deceased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll decease
you'll decease
he'll decease
we'll decease
you'll decease
they'll decease 	I'll be deceasing
you'll be deceasing
he'll be deceasing
we'll be deceasing
you'll be deceasing
they'll be deceasing	I'll have deceased
you'll have deceased
he'll have deceased
we'll have deceased
you'll have deceased
they'll have deceased	I'll have been deceasing
you'll have been deceasing
he'll have been deceasing
we'll have been deceasing
you'll have been deceasing
they'll have been deceasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I won't decease
you won't decease
he won't decease
we won't decease
you won't decease
they won't decease 	I won't be deceasing
you won't be deceasing
he won't be deceasing
we won't be deceasing
you won't be deceasing
they won't be deceasing	I won't have deceased
you won't have deceased
he won't have deceased
we won't have deceased
you won't have deceased
they won't have deceased	I won't have been deceasing
you won't have been deceasing
he won't have been deceasing
we won't have been deceasing
you won't have been deceasing
they won't have been deceasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I decease?
will you decease?
will he decease?
will we decease?
will you decease?
will they decease? 	will I be deceasing?
will you be deceasing?
will he be deceasing?
will we be deceasing?
will you be deceasing?
will they be deceasing? 	will I have deceased?
will you have deceased?
will he have deceased?
will we have deceased?
will you have deceased?
will they have deceased? 	will I have been deceasing?
will you have been deceasing?
will he have been deceasing?
will we have been deceasing?
will you have been deceasing?
will they have been deceasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
won't I decease?
won't you decease?
won't he decease?
won't we decease?
won't you decease?
won't they decease? 	won't I be deceasing?
won't you be deceasing?
won't he be deceasing?
won't we be deceasing?
won't you be deceasing?
won't they be deceasing? 	won't I have deceased?
won't you have deceased?
won't he have deceased?
won't we have deceased?
won't you have deceased?
won't they have deceased? 	won't I have been deceasing?
won't you have been deceasing?
won't he have been deceasing?
won't we have been deceasing?
won't you have been deceasing?
won't they have been deceasing?