young (adj.)

Old English geong "youthful, young; recent, new, fresh," from Proto-Germanic *junga- (source also of Old Saxon and Old Frisian jung, Old Norse ungr, Middle Dutch jonc, Dutch jong, Old High German and German jung, Gothic juggs), from PIE *yuwn-ko-, suffixed form of root *yeu- "vital force, youthful vigor" (source also of Sanskrit yuvan- "young; young man;" Avestan yuuanem, yunam "youth," yoista- "youngest;" Latin juvenis "young," iunior "younger, more young;" Lithuanian jaunas, Old Church Slavonic junu, Russian junyj "young," Old Irish oac, Welsh ieuanc "young").

From c. 1830-1850, Young France, Young Italy, etc., were loosely applied to "republican agitators" in various monarchies; also, especially in Young England, Young America, used generally for "typical young person of the nation." For Young Turk, see Turk.

young (n.)

"young animals collectively, offspring," late 15c., from young (adj.).

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Definitions of young from WordNet
young (adj.)
(used of living things especially persons) in an early period of life or development or growth;
young people
Synonyms: immature
young (adj.)
(of crops) harvested at an early stage of development; before complete maturity;
young corn
Synonyms: new
young (adj.)
suggestive of youth; vigorous and fresh;
he is young for his age
Synonyms: youthful / vernal
young (adj.)
being in its early stage;
a young industry
the day is still young
young (adj.)
not tried or tested by experience;
a young hand at plowing
Synonyms: unseasoned / untested / untried
young (n.)
any immature animal;
Synonyms: offspring
young (n.)
young people collectively;
rock music appeals to the young
Synonyms: youth
Young (n.)
United States film and television actress (1913-2000);
Synonyms: Loretta Young
Young (n.)
United States civil rights leader (1921-1971);
Synonyms: Whitney Young / Whitney Moore Young Jr.
Young (n.)
British physicist and Egyptologist; he revived the wave theory of light and proposed a three-component theory of color vision; he also played an important role in deciphering the hieroglyphics on the Rosetta Stone (1773-1829);
Synonyms: Thomas Young
Young (n.)
United States jazz tenor saxophonist (1909-1959);
Synonyms: Pres Young / Lester Willis Young
Young (n.)
English poet (1683-1765);
Synonyms: Edward Young
Young (n.)
United States baseball player and famous pitcher (1867-1955);
Synonyms: Cy Young / Danton True Young
Young (n.)
United States religious leader of the Mormon Church after the assassination of Joseph Smith; he led the Mormon exodus from Illinois to Salt Lake City, Utah (1801-1877);
Synonyms: Brigham Young