Meaning of “civilized” - Learner’s Dictionary

civilized

adjective ( also UK -ised) uk us /ˈsɪvəlaɪzd/
SOCIETY

A civilized society is advanced and has well-developed laws and customs:

A fair justice system is an important part of civilized society.
POLITE

polite and calm:

Let's discuss this in a civilized manner.

(Definition of “civilized” from the Cambridge Learner’s Dictionary © Cambridge University Press)