GIRLISH
girlish, schoolgirlish
(adjective) befitting or characteristic of a young girl; “girlish charm”; “a dress too schoolgirlish for office wear”
Source: WordNet® 3.1
Etymology
Adjective
girlish (comparative more girlish, superlative most girlish)
Like (that of) a girl; feminine.
(archaic) Of or relating to girlhood.
Source: Wiktionary
Girl"ish, a.
Definition: Like, or characteristic of, a girl; of or pertaining to
girlhood; innocent; artless; immature; weak; as, girlish ways;
girlish grief.
– Girl"ish*ly, adv.
– Girl"ish*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition