1. the quality or state of being determined, fixed, or clearly defined; lack of ambiguity or vagueness
Usage: formal; abstract noun
2. the quality of being resolute or firm in purpose; decisiveness
Usage: formal

Examples

• The determinateness of the contract terms left no room for dispute.
• She approached the project with remarkable determinateness and focus.
• The scientist valued the determinateness of her experimental results.
• His determinateness in pursuing his goals impressed everyone around him.
• The determinateness of the boundary line was established by the survey.
• Without determinateness in the rules, the game became confusing.