will heighten
Regular verb: heighten - heightened- heightened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will heighten
you will heighten
he will heighten
we will heighten
you will heighten
they will heighten 	I will be heightening
you will be heightening
he will be heightening
we will be heightening
you will be heightening
they will be heightening	I will have heightened
you will have heightened
he will have heightened
we will have heightened
you will have heightened
they will have heightened	I will have been heightening
you will have been heightening
he will have been heightening
we will have been heightening
you will have been heightening
they will have been heightening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will not heighten
you will not heighten
he will not heighten
we will not heighten
you will not heighten
they will not heighten 	I will not be heightening
you will not be heightening
he will not be heightening
we will not be heightening
you will not be heightening
they will not be heightening	I will not have heightened
you will not have heightened
he will not have heightened
we will not have heightened
you will not have heightened
they will not have heightened	I will not have been heightening
you will not have been heightening
he will not have been heightening
we will not have been heightening
you will not have been heightening
they will not have been heightening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I heighten?
will you heighten?
will he heighten?
will we heighten?
will you heighten?
will they heighten? 	will I be heightening?
will you be heightening?
will he be heightening?
will we be heightening?
will you be heightening?
will they be heightening? 	will I have heightened?
will you have heightened?
will he have heightened?
will we have heightened?
will you have heightened?
will they have heightened? 	will I have been heightening?
will you have been heightening?
will he have been heightening?
will we have been heightening?
will you have been heightening?
will they have been heightening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I not heighten?
will you not heighten?
will he not heighten?
will we not heighten?
will you not heighten?
will they not heighten? 	will I not be heightening?
will you not be heightening?
will he not be heightening?
will we not be heightening?
will you not be heightening?
will they not be heightening? 	will I not have heightened?
will you not have heightened?
will he not have heightened?
will we not have heightened?
will you not have heightened?
will they not have heightened? 	will I not have been heightening?
will you not have been heightening?
will he not have been heightening?
will we not have been heightening?
will you not have been heightening?
will they not have been heightening?