Am

The word “Am” means the first-person singular present form of "to be," used with "I.". In plain terms, the form of "be" that goes with "I" — "I am," never "I is" or "I are.".

Here is “Am” used in a sentence: “I am ready to leave whenever you are.”

“Am” is a verb.

The word “Am” comes from Old English. From Old English eom, part of the highly irregular verb "to be," inherited from a very old Indo-European root.

“Am” is a very common word in modern English, usually learned at around the A1 level.

All three are present-tense forms of "to be." "Am" is used only with "I" ("I am ready"), "is" with singular third-person subjects ("she is ready"), and "are" with "you," "we," and "they" ("they are ready").

Yes — "aren't I" is the accepted tag question for "I am," as in "I'm on the list, aren't I?" Standard English has no everyday "amn't," so "aren't I" fills the gap; in very formal writing you can use "am I not" instead.

In standard writing, no — "am" is the first-person singular form of "to be" and needs its subject: "I am on my way." Dropping the pronoun ("am on my way") is common in quick messages and some dialects, but it is nonstandard in formal English.

"I'm" is the contraction of "I am" and is perfectly acceptable in emails, fiction, and everyday writing. Academic papers and very formal documents usually spell out "I am," but the contraction is never grammatically wrong.