infinitive
linguistics
Quick Summary
In linguistics, an infinitive is a verb form that functions similarly to a noun but retains some verb characteristics. In English, it is typically formed with "to" preceding the base form of the verb, such as in "to go". However, with auxiliary and certain other verbs, the "to" is omitted, as in "no one saw her leave". The term "infinitive" itself comes from Latin, meaning "not specified," as this verb form does not indicate person or number. An infinitival is an adjective relating to the infinitive.123
Summary created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
3 Britannica Sources
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.