Английский разговорный словарь (основной) - decisive
Decisive
decisive
dɪˈsaɪsɪv adj. 1 that decides an issue; conclusive. 2 (of a person, esp. as a characteristic) able to decide quickly and effectively. øødecisively adv. decisiveness n. [F d÷cisif -ive f. med.L decisivus (as DECIDE)]