bromide Look up bromide at Dictionary.com
1836, from bromine, the pungent, poisonous element (1827), from Fr. brome, from Gk. bromos "stench." Used as a sedative; figurative sense of "dull, conventional person or trite saying" popularized by U.S. humorist Gelett Burgess (1866-1951) in his book "Are You a Bromide?" (1906). Related: Bromidic.