Also found in: Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.


(ĭn′fən-tl-ĭz′əm, ĭn-făn′tl-)
1. The existence of juvenile physical or psychological characteristics in an adult, as from failure to develop secondary sexual characteristics.
a. Marked immaturity, as in behavior or character.
b. An infantile act or remark.
3. A condition in which one desires to act or be treated like a baby, sometimes associated with a paraphilia.


1. (Psychology) psychol
a. a condition in which an older child or adult is mentally or physically undeveloped
b. isolated instances of infantile behaviour in mature persons
2. childish speech; baby talk


(ˈɪn fən tlˌɪz əm, -taɪˌlɪz-, ɪnˈfæn tlˌɪz əm)

1. the persistence in an adult of markedly childish anatomical, physiological, or psychological characteristics.
2. an infantile act, trait, etc.


the condition of one who is not a child acting abnormally childlike. — infantility, n.infantilistic, adj.
See also: Psychology
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.infantilism - an abnormal condition in which an older child or adult retains infantile characteristics
abnormalcy, abnormality - an abnormal physical condition resulting from defective genes or developmental deficiencies
ateleiosis, ateliosis - a form of infantilism characterized by physical underdevelopment but normal intelligence
2.infantilism - infantile behavior in mature persons
misbehavior, misbehaviour, misdeed - improper or wicked or immoral behavior


[ɪnˈfæntɪˌlɪzəm] Ninfantilismo m


n. infantilismo, manifestación de características infantiles en la edad adulta.
Inmadurez extrema.
References in periodicals archive ?
By deifying Tagore and Ray, Bengalis have incarcerated the two artists in a prison- house of infantilism.
Surely, it was the double demands of his life, the curiosity for company, the furious clowning, the infantilism, the immediate and instant affection (exactly the stuff that can irritate quieter more diligent writers and critics), that fuelled his most vivid verse.
Macedonia seems like experimental laboratory, to prove how long a country would persist based on Macedonian political infantilism and on Albanian political ignorance.
It has dramatized environmentalism's descent into infantilism.
Wisely choosing to set aside a reading of these texts' anality as a sign of repressed infantilism (cultural or otherwise), Stockton instead sees the excremental as an inevitably present, often feminized figure for wit in early modern discourse.
While compelling from the perspective of group psychology, these analyses could be complemented by focusing on the individual identity crises that contributed to the utopianistic mindset of the Multirude--a phenomena that Erik Erikson (1968) attributed to the, "remnants of infantilism and adolescence in man" (p.
Michelle's longing for structure indicates a certain infantilism with which entity theorists approach weight loss.
In the context of the sharp polarization of American politics in the early twentieth century and the unappealing infantilism (along with frequent incivility) of so many of those who have recently occupied places alongside Daniels on the American Right, this humility and reasoned tone makes Daniels something of a unique figure.
Saguna refuses the servility of the governed and insists there is a broader terrain of relationship available with missionaries beyond the infantilism implied in her mother's distinction of colour and the missionary child's behaviour, a relational context she defines as 'sisterly' because of its basis in love and affection; an emotional range that belies hierarchies of race and domination, being instead based on mutuality and recognition.
The practice of dressing and acting like a baby is known as paraphilic infantilism but there is little in the way of formal research on the subject, although some have linked it to masochism.
The intent is serious, and therefore met with worry in France, the UK, Turkey and other countries, and displays the level of infantilism in Netanyahu's government.
Suffering with a raging case of legal infantilism, inquiring minds may ask: Who was this guy Friendly, anyway?