"a number of symptoms occurring together," 1540s, from medical Latin, from Greek syndrome "concurrence of symptoms, concourse of people," from syndromos "place where several roads meet," literally "a running together," from syn- "with" (see syn-) + dromos "a running, course" (see dromedary). Psychological sense is from 1955.
every word has a syndrome of meanings
syndetic
syndic
syndicalism
syndicate
syndication
syndrome
syne
synecdoche
synechia
synergetic
synergism