Synonyms of unexpected

Adjective

1. unexpected (vs. expected), unannounced, unheralded, unpredicted, unanticipated, unforeseen, unlooked-for, out of the blue(predicate), unhoped, unhoped-for, unthought, unthought-of, unprovided for(predicate), upset(prenominal), surprising

usage: not expected or anticipated; "unexpected guests"; "unexpected news"

Definition and meaning of unexpected (Dictionary)