English Irregular Verbs

There are many Irregular Verbs in English which do not conform to the pattern. The principal parts of the English verb are the base form, the simple past, and the past participle. For regular verbs, the simple past and the past participle are spelled the same and are created by adding
ed to the base form. However, there are many irregular verbs in English which do not conform to this pattern.

The additional forms of the verb in English are the
s form (3rd person singular present), and the present participle, which is created by adding ing to the base form. There are no irregular forms of the present participle, so the spelling of any verb will adhere to the rules of spelling for regular inflection.

A comprehensive list of
619 English irregular verbs, including their base form, past simple, past participle and definitions is here below.

Base Form Past Simple Past Participle Definition
Unbear Unbore Unborn/Unborne To remove a horse's rein and straps
Unbend Unbent Unbent To retore something to its original shape that has been distorted
Unbind Unbound Unbound To set something free
To untie, remove ropes, chains, etc..
Unbuild Unbuilt Unbuilt To demolish
Unclothe Unclad/Unclothed Unclad/Unclothed To remove clothes
Underbid Underbid Underbid/Underbidden To offer less money in an auction or sale
Underbuy Underbought Underbought To buy for less than the real value
Undercut Undercut Undercut To sell at a cheaper price than a competitor
Underdo Underdid Underdone To do less than necessary
Not to cook enough
Underfeed Underfed Underfed To give too little food to someone or an animal
Undergird Undergirt/Undergirded Undergirt/Undergirded To make something secure underneath
To give moral support
Undergo Underwent Undergone To suffer or go through an unpleasant experience, such as surgery
Underlay Underlaid Underlaid To put underneath something
Underlet Underlet Underlet To rent for less than the real value
Underlie Underlay Underlain To be the real reason, meaning or idea behind something, usually hidden or not clear
Underpay Underpaid Underpaid To pay someone too little or pay less than the price
Underrun Underran Underrun To pass or flow underneath something
Undersell Undersold Undersold To sell at a lower price than a competitor
Undershoot Undershot Undershot To shoot too short
Not to reach a traget
Underspend Underspent Underspent To sepnd less money than allocated in the department or company's budget
Understand Understood Understood To know or come to know the meaning of something
Undertake Undertook Undertaken To accept responsibility for doing something
Underthrust Underthrust Underthrust To insert faulted rock under a passive rock mass
Underwrite Underwrote Underwritten To accept part or all of a financial risk, especially insurance
Undo Undid Undone To ruin somebody's reputation
To 'open' clothes or shoes before taking them off
Undraw Undrew Undrawn To open a curtain
To withdraw
Undraw Undrew Undrawn To open, draw back (curtains, etc)
Unfreeze Unfroze Unfrozen To make assets availably for use
To thaw something
Unhang Unhung Unhung To remove something that is hanging
Unhide Unhid Unhidden To expose something that was hidden
Unhold Unheld Unheld To stop holding or not to hold
Unknit Unknit/Unknitted Unknit/Unknitted To untie
Unlade Unladed Unladen/Unladed To remove cargo, unload
Unlay Unlaid Unlaid To untwist a rope
Unlearn Unlearnt/Unlearned Unlearnt/Unlearned To try to forget or change a habit or something that had been learned
Unmake Unmade Unmade To remove a decision
Unreeve Unrove/Unreeved Unrove/Unreeved To remove a rope from a hook
Unsay Unsaid Unsaid Not to say something
To take back something that you said
Unsell Unsold Unsold To convince someone that something is worthless or false
Unsew Unsewed Unsewn/Unsewed To undo someone sewed, remove the stitches
Unsling Unslung Unslung To remove something held in a sling
Unspeak Unspoke Unspoken To take back what has been said or not to say something
Unspin Unspun Unspun To untwist or unravel
Unstick Unstuck Unstuck To seperate things that have been stuck together
To take off
Unstring Unstrung Unstrung To open something secured with string
Unswear Unswore Unsworn To take back an oath
Unteach Untaught Untaught To make someone forget something they have learned
Unthink Unthought Unthought To remove something from your mind
Untread Untrod Untrodden To tread back, retrace your steps
Unweave Unwove Unwoven To undo things that have been woven together
Unwind Unwound Unwound To relax
Unwrite Unwrote Unwritten To delete writing or not to write
Upbuild Upbuilt Upbuilt To build up, develop on a large scale
Uphold Upheld Upheld To support or confirm a decision
Uppercut Uppercut Uppercut To punch upwards towards someone's chin
Uprise Uprose Uprisen To get up, stand up, move up
To return from the dead
Upset Upset Upset To make somebody unhappy or disturbed
Upspring Upsprang Upsprung To jump or spring up
Upsweep Upswept Upswept To sweep or brush upwards
Uptear Uptore Uptorn To tear into pieces

English Irregular Verbs Index

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