1) Accordance with the rules 2) Authenticity 3) Authority 4) Conformance with the law 5) Lawfulness 6) Legitimacy 7) Legitimateness 1) Truth 2) Validness 
• (n.) The state or quality of being legal; conformity to law. • (n.) A conformity to, and resting upon, the letter of the law.
[Noun] Being within the law.
Le·gal'i·ty (le*găl'ĭ*tȳ) noun [ Confer Late Latin legalitas , French légalité . Confer Loyalty .] 1. The state or quality of being legal; conformity to law. 2. (Theol.) A conformity to, and resting upon, the letter of the law. 
[n] - lawfulness by virtue of conformity to a legal statute
legality 1. Attachment to or observance of law or rule. 2. In theology, insistence on the letter of the law; reliance on works for salvation, rather than on free grace. 3. The spirit or way of thinking characteristic of the legal profession; pl. points of manner or speech indicative of this. 4. The quality of being legal or in conformity with the l...
noun lawfulness by virtue of conformity to a legal statute