Unwavering firmness of character, action, or will: decision, decisiveness, determination, firmness, purpose, purposefulness, resoluteness, resolution, resolve, toughness, will, willpower.

What does Decidedness mean?

firm or unwavering adherence to one's purpose. for two years he pursued the presidential nomination with an undeviating decidedness.

Is instancy a word?

quality of being instant; urgency; pressing nature. immediateness.