to toughen
Regular verb: toughen - toughened- toughened

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I toughen
you toughen
he toughens
we toughen
you toughen
they toughen 	Iamtoughening
youaretoughening
heistoughening
wearetoughening
youaretoughening
theyaretoughening	I toughened
you toughened
he toughened
we toughened
you toughened
they toughened	Iwastoughening
youweretoughening
hewastoughening
weweretoughening
youweretoughening
theyweretoughening	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I have toughened
you have toughened
he has toughened
we have toughened
you have toughened
they have toughened	I have been toughening
you have been toughening
hehasbeen toughening
we have been toughening
you have been toughening
they have been toughening	I had toughened
you had toughened
he had toughened
we had toughened
you had toughened
they had toughened	I had been toughening
you had been toughening
he had been toughening
we had been toughening
you had been toughening
they had been toughening	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I will toughen
you will toughen
he will toughen
we will toughen
you will toughen
they will toughen 	I will be toughening
you will be toughening
he will be toughening
we will be toughening
you will be toughening
they will be toughening	I will have toughened
you will have toughened
he will have toughened
we will have toughened
you will have toughened
they will have toughened	I will have been toughening
you will have been toughening
he will have been toughening
we will have been toughening
you will have been toughening
they will have been toughening	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I would toughen
you would toughen
he would toughen
we would toughen
you would toughen
they would toughen 	I would be toughening
you would be toughening
he would be toughening
we would be toughening
you would be toughening
they would be toughening	I would have toughened
you would have toughened
he would have toughened
we would have toughened
you would have toughened
they would have toughened	I would have been toughening
you would have been toughening
he would have been toughening
we would have been toughening
you would have been toughening
they would have been toughening	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to toughen 	 	toughen
Let's toughen
toughen 	 	

Participle 	
Present 	Past 	 	 	
toughening	toughened