premature and puerile, petty
undeveloped, immature, early, unready, unripe
immature
Here are 4 words to get you started: unready, unripened, green, or immature
People were talking about how immature the boy was.
"Immature" is an adjective, the opposite of "mature."
"im" is a prefix in the word "immature" which means "not" or "lacking." So, "im" in "immature" indicates that something is not fully developed or grown.
ish.---Actually, -ish is a suffix, not a prefix. A prefix is the front part of a word. For instance, take the word immature. That means childish, and the prefix is im- which means not. So an immature person is not mature, but childish.If you want another suffix for child that makes the meaning the same, you can add -like. So a person can be childlike.
Careless and reckless are synonyms for irresponsible. Immature is another synonym.
Immature can mean childish or stubborn. The immature boy did not want to tie his shoes, and then fell.
immature
You are immature.
No, "immature" is not a suffix; it is an adjective. The word is formed by combining the prefix "im-" (meaning "not") with the root word "mature." Suffixes are added to the end of words to change their meaning or grammatical function, while "immature" is a complete word on its own.