definitive
adjective
[ dɪˈfɪnɪtɪv ]
• (of a conclusion or agreement) done or reached decisively and with authority.
• "a definitive decision"
Similar:
conclusive,
final,
ultimate,
decisive,
unconditional,
unqualified,
absolute,
categorical,
positive,
definite,
• (of a postage stamp) for general use and typically of standard design, not special or commemorative.
definitive
noun
• a definitive postage stamp.
• "low-value British definitives simply have a portrait of the reigning monarch"
Origin:
late Middle English: from Old French definitif, -ive, from Latin definitivus, from definit- ‘set within limits’, from the verb definire (see define).