to tighten
Verbo regular: tighten - tightened- tightened

Indicativo 	
Presente 	Presente continuo 	Pretérito 	Pretérito continuo 	
I tighten
you tighten
he tightens
we tighten
you tighten
they tighten 	I'mtightening
you'retightening
he'stightening
we'retightening
you'retightening
they'retightening	I tightened
you tightened
he tightened
we tightened
you tightened
they tightened	Iwastightening
youweretightening
hewastightening
weweretightening
youweretightening
theyweretightening	
Presente perfecto 	Presente perfecto continuo 	Pluscuamperfecto 	Pluscuamperfecto continuo 	
I've tightened
you've tightened
he's tightened
we've tightened
you've tightened
they've tightened	I'vebeen tightening
you'vebeen tightening
he'sbeen tightening
we'vebeen tightening
you'vebeen tightening
they'vebeen tightening	I'd tightened
you'd tightened
he'd tightened
we'd tightened
you'd tightened
they'd tightened	I'd been tightening
you'd been tightening
he'd been tightening
we'd been tightening
you'd been tightening
they'd been tightening	
Futuro simple 	Futuro continuo 	Futuro perfecto 	Futuro perfecto contínuo 	
I'll tighten
you'll tighten
he'll tighten
we'll tighten
you'll tighten
they'll tighten 	I'll be tightening
you'll be tightening
he'll be tightening
we'll be tightening
you'll be tightening
they'll be tightening	I'll have tightened
you'll have tightened
he'll have tightened
we'll have tightened
you'll have tightened
they'll have tightened	I'll have been tightening
you'll have been tightening
he'll have been tightening
we'll have been tightening
you'll have been tightening
they'll have been tightening	

Condicional 	
Presente 	Presente continuo 	Passado 	Passado continuo 	
I'd tighten
you'd tighten
he'd tighten
we'd tighten
you'd tighten
they'd tighten 	I'd be tightening
you'd be tightening
he'd be tightening
we'd be tightening
you'd be tightening
they'd be tightening	I'd have tightened
you'd have tightened
he'd have tightened
we'd have tightened
you'd have tightened
they'd have tightened	I'd have been tightening
you'd have been tightening
he'd have been tightening
we'd have been tightening
you'd have been tightening
they'd have been tightening	

Infinitivo 	
Imperativo 	
Infinitivo 	 	Imperativo 	 	
to tighten 	 	tighten
Let's tighten
tighten 	 	

Participio 	
Presente 	Passado 	 	 	
tightening	tightened