Akademik

ISN'T

contr. is not.

* * *

/ˈızn̩t/

— used as a contraction of is not

This isn't the way I expected it to be.

She isn't coming to dinner.

* * *

isn't [isn't] [ˈɪznt] [ˈɪznt] short form

is not

* * *

isn't

colloq. form of is not.

Useful english dictionary. 2012.