to underperform
Regular verb: underperform - underperformed- underperformed

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I underperform
you underperform
he underperforms
we underperform
you underperform
they underperform 	I'munderperforming
you'reunderperforming
he'sunderperforming
we'reunderperforming
you'reunderperforming
they'reunderperforming	I underperformed
you underperformed
he underperformed
we underperformed
you underperformed
they underperformed	Iwasunderperforming
youwereunderperforming
hewasunderperforming
wewereunderperforming
youwereunderperforming
theywereunderperforming	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've underperformed
you've underperformed
he's underperformed
we've underperformed
you've underperformed
they've underperformed	I'vebeen underperforming
you'vebeen underperforming
he'sbeen underperforming
we'vebeen underperforming
you'vebeen underperforming
they'vebeen underperforming	I'd underperformed
you'd underperformed
he'd underperformed
we'd underperformed
you'd underperformed
they'd underperformed	I'd been underperforming
you'd been underperforming
he'd been underperforming
we'd been underperforming
you'd been underperforming
they'd been underperforming	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll underperform
you'll underperform
he'll underperform
we'll underperform
you'll underperform
they'll underperform 	I'll be underperforming
you'll be underperforming
he'll be underperforming
we'll be underperforming
you'll be underperforming
they'll be underperforming	I'll have underperformed
you'll have underperformed
he'll have underperformed
we'll have underperformed
you'll have underperformed
they'll have underperformed	I'll have been underperforming
you'll have been underperforming
he'll have been underperforming
we'll have been underperforming
you'll have been underperforming
they'll have been underperforming	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd underperform
you'd underperform
he'd underperform
we'd underperform
you'd underperform
they'd underperform 	I'd be underperforming
you'd be underperforming
he'd be underperforming
we'd be underperforming
you'd be underperforming
they'd be underperforming	I'd have underperformed
you'd have underperformed
he'd have underperformed
we'd have underperformed
you'd have underperformed
they'd have underperformed	I'd have been underperforming
you'd have been underperforming
he'd have been underperforming
we'd have been underperforming
you'd have been underperforming
they'd have been underperforming	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to underperform 	 	underperform
Let's underperform
underperform 	 	

Participle 	
Present 	Past 	 	 	
underperforming	underperformed