unforeseen Synonyms

out of the blue unanticipated unlooked-for undreamt unintended unintentional swift serendipitous unwitting unseen undreamed unlooked unhoped-for unforeseeable unexpected from left field unplanned not in the cards not bargained for without warning unthought-of unthought unsuspected unpredicted unimagined unheralded undreamt-of undreamed-of unannounced unpredictable surprising surprise extraordinary dumfounding contingent coincidental charming chance casual astounding astonishing appealing aleatory adventitious accidental fabulous fantastic fluky sudden startling