Precise and Valid

adjective

• Sharply exact or accurate or delimited.
  • usage: "a precise mind"; "specified a precise amount"; "arrived at the precise moment"
• Of ideas, images, representations, expressions. ( characterized by perfect conformity to fact or truth; strictly correct)
  • usage: "a precise image"; "a precise measurement"
  • synonyms: accurate, exact

• (a.) Strictly adhering or conforming to rule; very nice or exact; punctilious in conduct or ceremony; formal; ceremonious.
• (a.) Having determinate limitations; exactly or sharply defined or stated; definite; exact; nice; not vague or equivocal; as, precise rules of morality.

adjective

• Well grounded in logic or truth or having legal force.
  • usage: "a valid inference"; "a valid argument"; "a valid contract"
• Still legally acceptable.
  • usage: "the license is still valid"

• (a.) Having sufficient strength or force; founded in truth; capable of being justified, defended or supported; not weak or defective; sound; good; efficacious; as, a valid argument; a valid objection.
• (a.) Having legal strength or force; executed with the proper formalities; incapable of being rightfully overthrown or set aside; as, a valid deed; a valid covenant; a valid instrument of any kind; a valid claim or title; a valid marriage.
• (a.) Strong; powerful; efficient.

Legally binding; authorized.