Synonyms to modus tollens

dilemma, Aristotelian sorites, Goclenian sorites, Gordian knot, Scylla and Charybdis, baffle, bafflement, bewilderment, bind, bother, box, catch-22, categorical syllogism, choice of Hercules, confoundment, confusion, corner, crux, deadlock, difficulty, discomposure, disconcert, disconcertedness, disconcertion, disconcertment, disturbance, embarrassment, enigma, enthymeme, figure, fix, hole, impasse, jam, knot, knotty point, mode, mood, mystery, mystification, no choice, node, nodus, nonplus, only choice, oxymoron, paradox, paralogism, perplexity, perturbation, pickle, plight, pons asinorum, poser, pother, predicament, problem, prosyllogism, pseudosyllogism, puzzle, puzzlement, quandary, riddle, rule, rule of deduction, scrape, snooker, sorites, spot, squeeze, stalemate, stew, stymie, syllogism, teaser, trouble, unassuredness, upset, vexed question, Establishment, Platonic body, Platonic form, Platonic idea, VIP, accept, acclaim, acknowledge, act, acute-angled triangle, add, adornment, adumbrate, advert to, aesthetic form, algebraize, allude to