decisive — English Dictionary

Adjective

1. Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive.

   Examples

   decisive vote

   decisive battle

   More examples (1)

   In truth, Tottenham never really looked like taking all three points and this defeat means they face a battle to reach the knockout stages -with their next home game against PAOK Salonika on 30 November likely to prove decisive.

2. Decided; definite; incontrovertible.

   Examples

   decisive victory

   [F]abulous forces are there encountered and a decisive victory is won: […]

3. Marked by promptness and decision, resolute; without hesitation.

   Examples

   decisive action

   a decisive person

   More examples (1)

   A noble instance of this attribute of the decisive character.

Adjective

1. determining or having the power to determine an outcome

   Antonyms

   indecisive

   Examples

   cast the decisive vote

   two factors had a decisive influence

2. unmistakable

   Examples

   had a decisive lead in the polls

3. characterized by decision and firmness

   Antonyms

   indecisive

   Examples

   an able and decisive young woman

   we needed decisive leadership

   More examples (1)

   she gave him a decisive answer

4. forming or having the nature of a turning point or crisis

   Synonyms

   critical

   Examples

   a critical point in the campaign

   the critical test