Synonyms of decisive

1 Syllable

set, firm, key, bent, crisp, keyer

2 Syllables

certain, intent, crucial, settled, telling, trenchant, doozie, well-set, final, vital, mullish

3 Syllables

important, true-hearted, influential, eventful, official, effectual, reliable, precise, momentous, life-or-death, riveted, resolved, pivotal, commanding, efficient, imperious, hard-and-fast, incorrupt, bottom-line, climactic, truehearted, critical, decided, assured, fateful, strong-willed, strategic, deciding, strong-minded, forceful

4 Syllables

climacteric, managerial, unarguable, resolute, high-principled, conclusive, determined, ultimate, incisive, bottomline, coal-and-ice, name-of-the-game, significant, peremptory, positive, necessary, determining, determinant, memorable, absolute, univocal, assertive, climatical

5 Syllables

supervisory, imperative, definitive, determinate, unappealable, policy-making, policymaking, unconditional, unequivocal, unconditioned

6 Syllables

administrative, organizational, determinative