There are 2 main definitions of kiss ass in English:

kiss ass1

North American vulgar slang Behave in an obsequious or sycophantic way.
See parent entry: kiss

Definition of kiss ass in:

There are 2 main definitions of kiss ass in English:

kiss-ass2

Syllabification: kiss-ass
Pronunciation: /ˈkisas
 
/

adjective

North American vulgar slang
Having or showing an obsequious or sycophantic eagerness to please.

noun

Back to top  
A person who shows an obsequious eagerness to please.

Definition of kiss ass in: