The verb "fall" is an irregular verb in English, commonly used to describe the action of moving downward, often due to gravity. Its conjugation deviates from the regular pattern for verbs.

In the present simple tense, "fall" follows its base form for most subjects: "I fall," "you fall," "he/she/it falls," and so on. For example, "Leaves fall from the trees in autumn."

In the past simple tense, "fall" changes to "fell." This irregular form is used to talk about actions that occurred and concluded in the past. For instance, "She fell down the stairs yesterday."

The past participle of "fall" is "fallen." When forming perfect tenses, such as present perfect or past perfect, the past participle is combined with auxiliary verbs. An example sentence is "They have fallen in love."

Understanding the irregular conjugation of "fall" is important for accurately describing actions related to moving downward or collapsing. The verb "fall" is also used in various idiomatic expressions, adding to its richness in the English language.