Synonyms of unanticipated

Adjective

1. unanticipated, unforeseen, unlooked-for, out of the blue(predicate), unexpected (vs. expected)

usage: not anticipated; "unanticipated and disconcerting lines of development"- H.W.Glidden; "unforeseen circumstances"; "a virtue unlooked-for in people so full of energy"; "like a bolt out of the blue"