(adj): prenominal), determinant, determinative, determining(prenominal) -- (having the power or quality of deciding
(adj): having momentous consequences; of decisive importance
(adj): putting an end to all debate or action
(adj): unmistakable
(adj): vs. indefinite) -- (precise; explicit and clearly defined
(adj): vs. indecisive) -- (characterized by decision and firmness
(adj): characterized by quickness and firmness
(adj): forming or having the nature of a turning point or crisis
(adj): vs. noncrucial), important -- (of extreme importance; vital to the resolution of a crisis