expected

unforeseen, unanticipated, unpredicted, unusual, surprising, abrupt, unplanned, unwelcome, extraordinary, inexplicable, unforeseeable, unintended, sudden, dramatic, startling, unsuspected, serendipitous, unsettling, unlooked, unpredictable, untimely, unprecedented, unpleasant, fortuitous, uncharacteristic, improbable, unexplainable, atypical, undesired, astonishing, shocking, embarrassing, astounding, strange, unavoidable, unscheduled, bizarre, odd, unexplained, inevitable, unsurprising, unordinary, bewildering, predictable, jarring, stunning, unnerving, untoward, perplexing, miraculous, unfathomable, momentary, puzzling, incredible, unlikely, unheralded, unimaginable, momentous, impending, earthshaking, impromptu, anticipated, intriguing, unrelated, providential, overwhelming, notable, offbeat, baffling, inauspicious, noteworthy, mysterious, remarkable, ominous, worrisome, unpremeditated, huge, enormous, inadvertent, unfortunate, amazing, inopportune, peculiar, unorthodox, unaccustomed, unintentional, unconventional, accidental, unfathomed, disappointing, implausible, hefty, epochal, significant, disconcerting, ungraceful, apparent, monumental, unprepared, unrepeatable, oddball, unfamiliar, unforseen, unlookedfor, expectable, foreseeable, opportune, disturbing, likely

., abrupt, aftereffect, attack, backfire, backlash, blizzard, booby trap, break, by-product, byproduct, cot death, crib death, disjunct, encounter, even, extrusion, failure, fairy godmother, flashback, forced, fortunate, galvanization, good luck, gracious, happy chance, infant death, inquest, isolated, jumping, meeting, overturn, peripeteia, peripetia, peripety, pitfall, potluck, precipitation, rash, serendipitous, serendipity, sideslip, sids, sinking, skid, sleeper, slip, startle reaction, startle response, strange, stunner, success, sucker punch, sudden infant death syndrome, supervene, surprise, surprisingness, switcheroo, unexpectedness, unhoped, unhoped-for, unthought, unthought-of, unusual, upset, upseta, upsetter, vagary

forced, out of the blue, sudden, surprising, unannounced, unanticipated, unforeseen, unheralded, unhoped, unhoped-for, unlooked-for, unplanned, unpredicted, unprovided for, unscheduled, unsuspected, unthought, unthought-of, upset