Authentic vs. Valid

Authenticadjective

Of the same origin as claimed; genuine.

Authenticadjective

Conforming to reality and therefore worthy of trust, reliance, or belief.

Authenticadjective

Having the final as the lowest note of the mode.

Authenticadjective

(obsolete) authoritative

Authenticadjective

Having a genuine original or authority, in opposition to that which is false, fictitious, counterfeit, or apocryphal; being what it purports to be; genuine; not of doubtful origin; real; as, an authentic paper or register.

Authenticadjective

Authoritative.

Authenticadjective

Of approved authority; true; trustworthy; credible; as, an authentic writer; an authentic portrait; authentic information.

Authenticadjective

Vested with all due formalities, and legally attested.

Authenticadjective

Having as immediate relation to the tonic, in distinction from plagal, which has a correspondent relation to the dominant in the octave below the tonic.

Authenticnoun

An original (book or document).

Authenticadjective

conforming to fact and therefore worthy of belief;

Authenticadjective

not counterfeit or copied;

Authenticadjective

of undisputed origin and not a copy; genuine

Authenticadjective

made or done in the traditional or original way, or in a way that faithfully resembles an original

Authenticadjective

based on facts; accurate or reliable

Authenticadjective

(in existentialist philosophy) relating to or denoting an emotionally appropriate, significant, purposive, and responsible mode of human life.

Authenticadjective

(of a church mode) containing notes between the final (the principal note) and the note an octave higher.

Validadjective

Well grounded or justifiable, pertinent.

Validadjective

Acceptable, proper or correct; in accordance with the rules.

Validadjective

Related to the current topic, or presented within context, relevant.

Validadjective

(logic) Of a formula or system: such that it evaluates to true regardless of the input values.

Validadjective

(logic) Of an argument: whose conclusion is always true whenever its premises are true.

Validadjective

Effective.

Validadjective

Strong; powerful; efficient.

Validadjective

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.

Validadjective

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.

Validadjective

well grounded in logic or truth or having legal force;

Validadjective

still legally acceptable;