Reverse Dictionary: LIGHT-HEARTED

ADJECTIVES
1310 ► GAY of persons, their attributes, and actions: full of joy and mirth; light-hearted, exuberantly cheerful, sportive, merry
1596 ► JUCUND jocund, mirthful, cheerful, merry, blithe, gay, sprightly, light-hearted; pleasant, delightful → obs.
1598 ► GAYSOME full of gaiety; blithe, light-hearted, buoyant, cheerful 
1672 ► JAUNTY light-hearted, cheerful
1715 ► VOCKIE merry, gay, light-hearted, happy → Sc. 
1715 ► VOGIE merry, cheerful, delighted, gay, light-hearted, happy → Sc.
1958 ► FUNSY providing amusement or diversion; entertaining, light-hearted → colloq.
1960 ► LUNCHY carefree, light-hearted, jokey → US students’ sl.

ADVERBS
1838 ► RAKISHLY jauntily, cheerfully, light-heartedly

NOUNS, PERSON
1340 ► GIGLET → GIGLOT a giddy, laughing, romping girl; a merry, light-hearted, playful girl
1340 ► GIGLO a merry, light-hearted, laughing, romping girl; a giddy, silly, thoughtless girl
1784 ► FUNSTER a person one who plays pranks or who likes to joke around; a comedian; also, a fun or light-hearted person
1785 ► GILPY a lively or saucy young girl; a brisk, light-hearted girl; a young, growing girl → Sc.
1788 ► FUNSTER a person who plays pranks, or one who likes to joke around; a comedian; also, a fun or light-hearted person → colloq.
1825 ► GINKIE a merry, light-hearted, playful girl; a giglet → Sc. obs.
1900 ► CALEERY a silly, light-hearted person → Sc. & Ireland
1997 ► ARCAN a lively, light-hearted fellow → Irish sl. (Bk.)