The past tense of jack-knife is jack-knifed. See all forms of jack-knife with easy examples.
The past tense of jackaroo is jackarooed. See all forms of jackaroo with easy examples.
The past tense of jackass is jackassed. See all forms of jackass with easy examples.
The past tense of jack is jacked. See all forms of jack with easy examples.
The past tense of jab is jabbed. See all forms of jab with easy examples.
The past tense of jabber is jabbered. See all forms of jabber with easy examples.
The past tense of ithe is ithed. See all forms of ithe with easy examples.
The past tense of itinerate is itinerated. See all forms of itinerate with easy examples.
The past tense of itch is itched. See all forms of itch with easy examples.
The past tense of itemise is itemised. See all forms of itemise with easy examples.