ETYM French crucial, from Latin crux, crucis, cross, torture. Related to Cross.
1. Having crucial relevance; SYN. relevant.
2. Having the power or quality of deciding; SYN. deciding, determinant, determinative, determining.
3. Of extreme importance; vital to the resolution of a crisis; SYN. important.
decisive / dəsaɪsɪv /
ETYM Cf. French décisif. Related to Decision.
1. Characterized by decision and firmness.
2. Determining or having the power to determine an outcome.