IT

The third-person singular personal pronoun that is normally used to refer to an inanimate object or abstract entity, also often used to refer to animals.

Example: "I heard the sound of the school bus - it was early today."

A third-person singular personal pronoun used to refer to a child, especially of unknown gender.

Example: "She took the baby and held it in her arms."

Used to refer to someone being identified, often on the phone, but not limited to this situation.

Example: "Is it her?"

The impersonal pronoun, used without referent as the subject of an impersonal verb or statement. (known as the dummy pronoun or weather it)

Example: "It is nearly 10 o’clock."

The impersonal pronoun, used without referent in various short idioms.

The impersonal pronoun, used as a placeholder for a delayed subject, or less commonly, object; known as the dummy pronoun or, more formally in linguistics, a syntactic expletive. the delayed subject is commonly a to-infinitive, a gerund, or a noun clause introduced by a .

Example: "He saw to it that everyone would vote for him. (with the noun clause introduced by that)"

All or the end; something after which there is no more.

Example: "Are there more students in this class, or is this it?"

A third-person singular personal pronoun used to refer to an animate referent who is transgender or is neither female nor male.

Followed by an omitted and understood relative pronoun: that which; what.