childishly

In puerile fashion

Childishly describes doing something in a manner characteristic of children—with immaturity, silliness, or petulance.

It often carries negative connotations of behavior inappropriate for one's age: He childishly refused to speak to her for days.

Less commonly, it can suggest innocent wonder or playfulness: They laughed childishly at the bubbles.

immature

petulantly

In irritable, sulky manner

frivolously · unreasonably · foolishly · recklessly · thoughtlessly · selfishly · demandingly · tantrum · whining · pouting

playful

playfully

In a fun-loving way

gleefully · romping · capering · giggling · prancing · skipping · gamboling · frolicking · teasingly · lightheartedly

naive

naively

Without experience or cynicism

trustingly · unworldly · simplistically · greenly · unquestioningly · uncritically · blinkered · unthinkingly · unsuspectingly · foolishly

whimsical

whimsically

In capricious, playful manner

capriciously · fantastically · magically · enchantedly · fairytale · make-believe · pretend · storybook · wonderingly · wide-eyed

innocent

innocently

Without intent to harm

wide-eyed · guileless · artlessly · ingenuously · unaffectedly · genuinely · sincerely · transparently · openly · sweetly

silly

sillily

In a frivolous manner

absurdly · ridiculously · clownishly · buffoonishly · giddily · daftly · zanily · inanely · flippantly · frivolously

Opposites
maturity of manner

childishlymaturely

In an adult manner

responsibly · sensibly · level-headedly · composedly · soberly

sophistication/wisdom

childishlywisely

With good judgment

sagely · sensibly · judiciously · prudently · sophisticatedly

Phrases
Family

childish, childishness

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G