"Han't" or "ha'n't", an early contraction for "has not" and "have not", developed from the elision of the "s" of "has not" and the "v" of "have not".

What is the short form of has not?

Meaning of hasn't in English

short form of has not: He hasn't done his homework.

What has contracted form?

The contracted form, also known as contractions in English grammar, refers to when a word is made by combining two words together, omitting some letters and replacing them with an apostrophe.