Where Did English Irregular Verbs Come From?

Why does English have work — worked, but also go — went and see — saw?

In the modern pattern, things look fairly simple: add -ed to a verb, and you get the past tense form.

But many common verbs behave differently.

These forms look strange if you view them only through the modern -ed rule. Historically, they come from an older system of English.

Old English Had Different Types of Verbs

In the Old English period, roughly from the 5th to the 11th century, verbs were divided into different groups. In a simplified way, the two most important types were weak verbs and strong verbs.

Weak verbs formed the past tense with an ending containing d or t. Modern forms such as worked, played, kept, and felt developed from this pattern.

Strong verbs worked differently: the vowel inside the word changed. Traces of that old system are still visible in forms like these:

In Old English, these vowel changes were part of normal grammar. Later, the system became less transparent, and for modern learners these forms now feel like separate words that have to be learned.

Why the Vowel Changes in Many Irregular Verbs

In many irregular verbs, the middle of the word changes:

These forms are connected with an older system in which a vowel change could carry grammatical meaning. English inherited this feature from the Germanic languages.

After the Norman Conquest in 1066, English changed significantly. During the Middle English period, roughly from the 11th to the 15th century, many old endings weakened or disappeared.

Why Some Verbs Became Regular

English gradually moved toward a more stable past tense pattern. Many old verbs that once had other forms eventually became regular verbs.

Today we say:

For rare words, this kind of regularization is natural. If a verb is not used often, its old form is less likely to stay strong in speakers’ memory. In those cases, the language more easily applies the general pattern.

Why the Most Common Verbs Are Often Irregular

At first, it may seem odd that basic verbs cause the most trouble. You might expect the most useful words to be the simplest. In English, history led to a different result.

When a word is used every day, its forms are repeated again and again in speech. Speakers remember them as ready-made forms instead of rebuilding them by rule each time.

That is why many irregular verbs are the very verbs you need even at a basic level:

Rare verbs more easily move toward the regular pattern. Frequent forms last longer. They appear in ordinary sentences: where you went, what you saw, what you made, what you took, what you said.

Why Go Becomes Went

The form went looks especially unusual, because go and went have almost no visible connection.

The reason is historical. Went is connected with the older verb wend, which meant “to go,” “to proceed,” or “to move.” During the Middle English period, went gradually became established as the past tense form of go. The verb wend still exists in English, but it is rare.

This phenomenon is called suppletion: different forms of one verb come from different roots. A similar situation appears with the verb be:

In practice, verbs like these have to be learned as fixed sets: go — went — gone, be — was/were — been. These forms cannot be produced from the base form using the modern rule.

How This Helps You Learn Irregular Verbs

The history of irregular verbs is useful when it helps you choose a better way to learn them.

It is better to start with frequent verbs. They kept their old forms precisely because they are used so often. That means they are also the forms you will need first in real speech.

Similar forms are easier to learn in small groups:

These groups do not give you a rule for every verb, but they help memory. When the list stops looking completely random, learning becomes easier.

After that, it is better to move the forms into short phrases right away:

In a phrase like this, the verb is remembered together with a situation instead of remaining just one more line in a table.

What to Remember

Irregular verbs have preserved traces of older English rules. In the Old English period, up to about the 11th century, some verbs formed their past tense through vowel changes. In the Middle English period, roughly from the 11th to the 15th century, English grammar became noticeably simpler, and many old endings weakened or disappeared.

The most frequent verbs survived best. That is why, in modern English, irregular verbs are often not rare words, but some of the most useful ones: go, see, make, take, come, say, find, think.

For English learners, the practical conclusion is simple: to speak accurately and confidently, irregular verbs have to be learned and practiced.