It's

Definition of it's:

part of speech: noun

A contraction of the two words it is.

Usage examples for it's:

• It's a great world, when all's said and done! "Max", Katherine Cecil Thurston.

• " It's all right where it is," said Gerald. "The Enchanted Castle", E. Nesbit.

• Come, old fellow, it's now or never!" "My Home In The Field of Honor", Frances Wilson Huard.

• It's like no other. "The Judgment House", Gilbert Parker.