Infantile

Adjective

Definition: Of or occurring among babies or very young children.

Definition: Childish; immature; displaying characteristics associated with infants or young children.

Synonyms: Childlike, Immature, Juvenile

Antonyms: Mature, Adult, Grown-up

Examples:

The infantile behavior of the toddler was expected at his age.
His infantile sense of humor was quite endearing.

Mnemonics:

Think of "infant" and remember that infantile refers to characteristics associated with infants or young children.
The "ile" in infantile can remind you of "child" or "juvenile."

Etymology:

Origin:

From Latin "infantilis" meaning "of an infant."

Historical Usage:

The term dates back to the late 15th century and has remained consistent in its meaning throughout history.

Related Idioms:

Idiom:

"Infantile paralysis"

Explanation:

This is an outdated term for polio, a viral infection that primarily affects children and can cause paralysis.

Misconceptions:

Misconception:

Confusing infantile with childish. While both terms can refer to immaturity, infantile specifically relates to characteristics associated with infants or young children.

Explanation:

Infantile behavior does not necessarily imply being immature or foolish in the same way that being childish does.