Irregular Verbs List

Before looking at Irregular Verbs list lets look at  Regular Verbs.

In English, regular verbs in the Past Simple Tense and the Past Participle are formed by:

     adding +ed or +d to the base form of the verb

Verbs that have a different form are considered Irregular Verbs. 

English has hundreds of irregular verbs. 

Common Irregular Verbs List

See also: 
Past Simple Tense
Past Participles

irregular verbs 1
irregular verbs 2
irregular verbs 3
irregular verbs 4

When a verb is irregular, other forms of the verb stem with prefixes or suffixes, will also be irregular:
do – done – did  
undo – undone – undid
redo – redone – redid