Definition

In a way that shows a lack of maturity or development; acting in a childish or naive manner.

Example

He reacted immaturely to the criticism, throwing a tantrum instead of discussing it calmly.

Conversation

I can't believe how he acted at the party last night.

Yeah, it was really surprising how he behaved so immaturely.

I thought he was past that phase, honestly.

Me too! It's frustrating to see someone act like that.

Synonyms & Antonyms

Root Explanation

Immaturely → It is formed from "im-" (meaning not) and "maturus" (from Latin, meaning ripe or fully developed) and the suffix "-ly" (meaning in a manner). The word "immaturely" means in a manner that is not fully developed or grown up.

Memory Tip

Think of 'not' ('im-') being combined with 'ripe' ('maturus') to remember that 'immaturely' describes behavior that is not fully developed.

Visually Confused Words