Entertainment
来自Big Physics
wiktionary
From Middle English entretenement(“support, maintenance”), from Old French entretenement; see entertain.
Morphologically entertain + -ment
etymonline
entertainment (n.)
1530s, "provision for support of a retainer; manner of social behavior," now obsolete, along with other 16c. senses; from entertain + -ment. Meaning "the amusement of someone" is from 1610s; sense of "that which entertains" is from 1650s; that of "public performance or display meant to amuse" is from 1727.
