ambiguous, amiss, asynchronous, capricious, chance, cryptic, delusion, elusive, equivocal, errant, erratic, fluctuate, foreshadow, foresight, foretell, hallucinate, hypothetical, indeterminate, intermittent, limbo, paradox, precarious, precipitous, ramification, seldom, solstice, sporadic, surge, suspend, suspension, tangent, tangential, tenuous, tergiversation, threatening, trap, unplanned, unwittingly, vagary, wager, wayward