英语词源字典 - 在线词源网站

baby (n.)[baby 词源字典]: late 14c., babi, diminutive of baban (see babe + -y (3)). Meaning "childish adult person" is from c. 1600. Meaning "youngest of a group" is from 1897. As a term of endearment for one's lover it is attested perhaps as early as 1839, certainly by 1901; its popularity perhaps boosted by baby vamp "a popular girl," student slang from c. 1922. As an adjective, by 1750.

Baby food is from 1833. Baby blues for "blue eyes" recorded by 1892 (the phrase also was used for "postpartum depression" 1950s-60s). To empty the baby out with the bath (water) is first recorded 1909 in G.B. Shaw (compare German das Kind mit dem Bade ausschütten). Baby's breath (noted for sweet smell, which also was supposed to attract cats) as a type of flower is from 1897. French bébé (19c.) is from English.[baby etymology, baby origin, 英语词源]
command (v.): c. 1300, from Old French comander "to order, enjoin, entrust" (12c.), from Vulgar Latin *commandare, from Latin commendare "to recommend, entrust to" (see commend), altered by influence of Latin mandare "to commit, entrust" (see mandate (n.)). Replaced Old English bebeodan. Related: Commanded; commanding.