Ill-behaved means an individual that is not behaving in the correct way, particularly in public settings. Alternatively, antonyms for ill-behaved would comprise terms such as courteous, civilized, respectful, considerate, and well-mannered. A well-behaved individual is one who acts politely and respectfully towards others, particularly in public, which shows a level of understanding for cultural nuances and societal norms. Good behavior is also regarded as a valuable characteristic for social interaction, and those who exhibit it are often better able to interact with others, whereas ill-behaved people are likely to be shunned by society. Therefore, being well-behaved is an essential attribute that contributes to an individual's growth and development.