English verb conjugation
TO STIFF

Regular verb: stiff - stiffed - stiffed

Indicative

Present	Present continuous	Preterite	Preterite continuous
don't I stiff? don't you stiff? doesn't she stiff? don't we stiff? don't you stiff? don't they stiff?	am I not stiffing? aren't you stiffing? isn't she stiffing? aren't we stiffing? aren't you stiffing? aren't they stiffing?	didn't I stiff? didn't you stiff? didn't she stiff? didn't we stiff? didn't you stiff? didn't they stiff?	wasn't I stiffing? weren't you stiffing? wasn't she stiffing? weren't we stiffing? weren't you stiffing? weren't they stiffing?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
haven't I stiffed? haven't you stiffed? hasn't she stiffed? haven't we stiffed? haven't you stiffed? haven't they stiffed?	haven't I been stiffing? haven't you been stiffing? hasn't she been stiffing? haven't we been stiffing? haven't you been stiffing? haven't they been stiffing?	hadn't I stiffed? hadn't you stiffed? hadn't she stiffed? hadn't we stiffed? hadn't you stiffed? hadn't they stiffed?	hadn't I been stiffing? hadn't you been stiffing? hadn't she been stiffing? hadn't we been stiffing? hadn't you been stiffing? hadn't they been stiffing?
Future	Future continuous	Future perfect	Future perfect continuous
won't I stiff? won't you stiff? won't she stiff? won't we stiff? won't you stiff? won't they stiff?	won't I be stiffing? won't you be stiffing? won't she be stiffing? won't we be stiffing? won't you be stiffing? won't they be stiffing?	won't I have stiffed? won't you have stiffed? won't she have stiffed? won't we have stiffed? won't you have stiffed? won't they have stiffed?	won't I have been stiffing? won't you have been stiffing? won't she have been stiffing? won't we have been stiffing? won't you have been stiffing? won't they have been stiffing?

Conditional

Present	Present continuous	Past	Past continuous
wouldn't I stiff? wouldn't you stiff? wouldn't she stiff? wouldn't we stiff? wouldn't you stiff? wouldn't they stiff?	wouldn't I be stiffing? wouldn't you be stiffing? wouldn't she be stiffing? wouldn't we be stiffing? wouldn't you be stiffing? wouldn't they be stiffing?	wouldn't I have stiffed? wouldn't you have stiffed? wouldn't she have stiffed? wouldn't we have stiffed? wouldn't you have stiffed? wouldn't they have stiffed?	wouldn't I have been stiffing? wouldn't you have been stiffing? wouldn't she have been stiffing? wouldn't we have been stiffing? wouldn't you have been stiffing? wouldn't they have been stiffing?

Infinitive

Imperative

Infinitive		Imperative
to stiff		- - -

Participle

Present	Past
stiffing	stiffed