VALID

valid

(adjective) still legally acceptable; “the license is still valid”

valid

(adjective) well grounded in logic or truth or having legal force; “a valid inference”; “a valid argument”; “a valid contract”

Source: WordNet® 3.1

Etymology

Adjective

valid (comparative more valid, superlative most valid)

Well grounded or justifiable, pertinent.

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

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

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

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

(Christianity, theology) Effective.

Antonyms

• invalid

• nonvalid

Hyponyms

• (in logic: argument whose conclusion is always true whenever its premises are all true): sound

Anagrams

• Advil, davil

Source: Wiktionary

Val"id, a. Etym: [F. valide, F. validus strong, from valere to be strong. See Valiant.]

1. Strong; powerful; efficient. [Obs.] "Perhaps more valid arms . . . may serve to better us." Milton.

2. 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. An answer that is open to no valid exception. I. Taylor.

3. (Law)

Definition: 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.

Syn.

– Prevalent; available; efficacious; just; good; weighty; sufficient; sound; well-grounded.

Source: Webster’s Unabridged Dictionary 1913 Edition