unanticipated Synonyms

unforeseen unlooked-for out of the blue unseen unhoped-for unforeseeable unexpected undreamt swift surprising sudden stunning startling spontaneous unprepared for unintentional overearly not in the cards not bargained for without warning unsuspected unpredicted unimagined unheralded unannounced unplanned eye-opening unintended splendid shocking fabulous extraordinary dumfounding charming chance casual astounding astonishing appealing amazing adventitious accidental fantastic fortuitous hasty remarkable quick precipitous precipitate precipitant