Meaning: Childish or immature in behavior.

Part of speech: adjective

Example: His babyish attitude annoyed his friends.

Category: Behavior

Synonyms:

• childish
• immature

Antonyms: mature

Meaning: to annoy someone by constantly complaining

Part of speech: verb

Example: Stop nagging me about my homework!

Category: Behavior

Meaning: the act of insulting someone by using derogatory names

Part of speech: noun

Example: Name-calling is not acceptable in our school.

Category: Behavior