What does childishness mean?
Childishness is the noun that names the quality of behaving like a child in ways considered inappropriate for one's age — sulking, tantrums, petty quarrelling, or an inability to accept criticism gracefully. Derived from the adjective 'childish', it is almost always pejorative: unlike its counterpart 'childlikeness', which celebrates the innocence and wonder of childhood, childishness implies a failure to grow up. It typically appears as an uncountable noun, often qualified by adjectives such as 'sheer' or 'utter' ('the sheer childishness of the remark'), and it can describe either a single act or a settled trait of character. Writers use it in psychology, literary criticism, and ordinary complaint alike, making it a precise and useful term for distinguishing immaturity from mere playfulness or spontaneity.
nounThe quality or state of being childish — behaviour, attitudes, or characteristics that are appropriate to a child but regarded as silly or immature in an adult.
- Immature, silly, or unreasonable behaviour typical of a child but inappropriate in an adult.
- The general quality of resembling a child, as in simplicity or lack of sophistication.
"His childishness at the meeting — sulking when his plan was rejected — surprised even his closest colleagues."
"She was exasperated by the childishness of arguing over who should sit by the window."
"There is an endearing childishness to his delight in opening presents."
Childishness is an uncountable noun and has no plural form; it refers to an abstract quality rather than countable items.
"Her childishness became apparent whenever things did not go her way."
English splits the child's spirit into two words with opposite moral charges: 'childishness' is the flaw adults are scolded for, while 'childlikeness' is the virtue adults are told to recover.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of childishness
Childishness derives from 'childish', the Middle English adjective formed from 'child' plus the suffix '-ish', meaning 'of or like a child'. The abstract noun was formed with the native English '-ness' suffix, following a productive pattern for creating qualities from adjectives. Its cognates within English include 'childhood' and 'childlike', all branching from the Old English root 'cild'; there are no widely known cognates in other Germanic languages, as the word's ancestry is essentially homegrown English.
Related word forms
How childishness is actually used
Almost always used critically or disapprovingly when applied to adult behaviour; it is a relatively formal word compared with everyday terms like 'silliness', and appears most often in written or evaluative contexts. It is an uncountable noun.
Easily confused with childishness
Childishness carries a negative sense of immaturity in an adult, while childlikeness is positive or neutral, denoting the innocent wonder, openness, or trust characteristic of children.