List of English irregular verbs

This is a list of irregular verbs in the English language.

Past tense irregular verbs
For each verb listed, the citation form (the bare infinitive) is given first, with a link to the relevant Wiktionary entry. This is followed by the simple past tense (preterite), and then the past participle. If there are irregular present tense forms (see below), these are given in parentheses after the infinitive. (The present participle and gerund forms of verbs, ending in -ing, are always regular. In English, these are used as verbs, adjectives, and nouns.) In the case of modal verbs the present and preterite forms are listed, since these are the only forms that exist with the present form identical for all persons.

The right-hand column notes whether the verb is weak or strong and whether it belongs to a subclass, and links to descriptions elsewhere. Information about the development of these verbs generally can be found at English irregular verbs; details of the etymology and usage of specific verbs can be found by consulting Wiktionary.

In some cases, there are two or more possibilities for a given form. In the table, the preferred or more common usage is generally listed first, though for some words the usage is nearly equal for the two choices. Sometimes the usage depends on the dialect. In many cases, such as spell (spelt vs. spelled), learn (learnt vs. learned), and spill (spilt vs. spilled), American English and Canadian English normally use the regular form, while British English, Australian English, New Zealand English and South African English tend to favour the irregular. In other cases, such as dive (dived vs. dove) and sneak (sneaked vs. snuck), the opposite is true. The irregular form tends to indicate duration, whereas the regular form often describes a short-term action (The fire burned for weeks. vs. He burnt his finger.), and in American English, the regular form is associated with the literal sense of a verb, while the irregular form with a figurative one.

The preterite and past participle forms of irregular verbs follow certain patterns. These include ending in -t (e.g. build, bend, send), stem changes (whether it is a vowel, such as in sit, win or hold, or a consonant, such as in teach and seek, that changes), or adding the [n] suffix to the past participle form (e.g. drive, show, rise). English irregular verbs are now a closed group, which means that newly formed verbs are always regular and do not adopt any of the irregular patterns.

This list only contains verb forms which are listed in the major dictionaries as being standard usage in modern English. There are also many thousands of archaic, non-standard and dialect variants. Modern English still has remnants of formerly irregular verbs in other parts of speech. Most obviously, adjectives like misshapen, beholden, or forlorn fossilize what are originally the past participles of the verbs shape and behold, and Old English forleosan. However, forleosan has fallen out of use and shape is now regular, so these verbs are not listed, and behold, while still irregular, can no longer be listed this participle form.

Present tense irregular verbs
Though the list of verbs irregular in the preterite or past participle is long, the list of irregular present tense verbs is very short. Excepting modal verbs like "shall", "will", and "can" that do not inflect at all in the present tense, there are only four of them (only two if pronunciation is ignored), not counting compounds including them:
 * be: I am, thou art, you are, he is, we are, they are. The contracted/reduced forms, used in unstressed positions and in particular as auxiliary verbs, are as follows: I’m, you’re, he’s, we’re, they’re.
 * do (and compounds such as "undo" and "redo"): I do, you do, he does, we do, they do where "does" is pronounced (instead of ) in contrast to, the pronunciation of the infinitive and the other present tense forms. The reduced forms of the verb do are pronounced /du/, /də/, /d/, or /dəz/, /dz/ for does and usually appear only in questions. The contracted forms of do are used only in the negative: I do not = I don't, you do not = you don't, he does not = he doesn't, we do not = we don't, they do not = they don't.
 * have: I have, you have, he has, we have, they have. If used as an auxiliary verb in the present perfect, past perfect and future perfect, its contracted forms can be used: I’ve, you’ve, he’s, we’ve, they’ve.
 * say (and compounds such as "gainsay" and "naysay"): I say, you say, he says, we say, they say where "says" has the standard pronunciation (instead of ) in contrast to the  used for the infinitive and other present tense forms.