We have put together a list of words that are similar to DECISIVENESS.

7 Alternative Words Similar to decisiveness

1 Decision Noun      Synonym Words Like Decision
2 Firmness Noun      Synonym Words Like Firmness
3 Resoluteness Noun      Synonym Words Like Resoluteness
4 Resolution Noun      Synonym Words Like Resolution
5 Resolve Noun      Synonym Words Like Resolve
6 Indecision Noun      Antonym Words Like Indecision

5 definitions of decisiveness

1 the trait of resoluteness as evidenced by firmness of character or purpose
2 the quality of being final or definitely settled
3 The quality of ending doubt, controversy, or the like; conclusiveness.
4 The state of being marked by decision or prompt determination: as, decisiveness of character.
5 The state or quality of being decisive.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide