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.
enterovirus
enterprise
enterprising
entertain
entertainer
entertainment
enthalpy
enthrall
enthrone
enthuse
enthusiasm
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