IMMATURE
ADJECTIVES
► BEARDLESS youthful, immature → c1325
► CALFISH stupid, untrained, immature → L16
► CALLOW immature or inexperienced → 1981 Aust. colloq. (Bk.)
► IMPUBERAL not come to puberty or maturity; immature, young as a child → 1836 obs.
► IMPUBERATE not come to puberty or maturity; immature, young as a child → 1880 obs.
► IMPUBIC not come to puberty or maturity; immature, young as a child → 1876 obs.
► JUVENESCENT immature, undeveloped → 1875
► PREPPIE ► PREPPY silly, immature → 1900
► PUERILE childishly foolish; immature or trivial → 17C
► RAWLY unripe, immature → 1824 Sc. obs.
► SAPPY immature, unready → a1627 obs.
► UNBLOWED unready, immature → 1623 obs.
► UNBLOWN unready, immature → 1594
► VEALY imperfectly developed; immature; characterized by youthful immaturity → 1890
NOUNS
► VEALINESS want of maturity → 1895
NOUNS – PERSON
► BABY an immature, foolish or childish person → 1539 often derogatory
► BABY CHILD an immature person → a2000 African-American sl.
► CHICKEN’S HEAD a stupid, immature girl → 1960s African-American sl.
► HALF-BAKED a half-baked person; a foolish, silly, or half-witted person; an immature person → 1866 colloq. & Eng. dial.
► LADDETTE an immature woman → 2012 Brit. sl. (Bk.)
► MAMMOTHREPT a spoiled child; a person of immature judgement → 1601 arch.
► SCHMENDRICH ► SCHMENDRICK a stupid person; an oaf; an immature male; a nonvirile male; used derisively by women → 20C US sl.
► SKIN an immature or inexperienced young person → 1989 UK Royal Navy sl.
► YEARLING GIRL a somewhat immature and still inexperienced young girl → Bk1992 Amer. South
► YOUNG THING an immature girl → Bk1904 Amer. sl.
► YOUT a child; a youth; an immature man; a youth gang member → 1949 US criminals’ sl.
Lexicophilia 