valid

val·id

V0012500 (văl′ĭd)adj.1. Well grounded; just: a valid objection.2. Producing the desired results; efficacious: valid methods.3. Having legal force; effective or binding: a valid title.4. Logic a. Containing premises from which the conclusion may logically be derived: a valid argument.b. Correctly inferred or deduced from a premise: a valid conclusion.5. Archaic Of sound health; robust.

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[French valide, from Old French, from Latin validus, strong, from valēre, to be strong; see wal- in Indo-European roots.]

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va·lid′i·ty, val′id·ness n.val′id·ly adv.Synonyms: valid, sound², cogent, convincing
These adjectives describe assertions, arguments, conclusions, reasons, or intellectual processes that are persuasive because they are well founded. What is valid is based on or borne out by truth or fact or has legal force: a valid excuse; a valid claim.
What is sound is free from logical flaws or is based on valid reasoning: a sound theory; sound principles.
Something cogent is both sound and compelling: cogent testimony; a cogent explanation.
Convincing implies the power to dispel doubt or overcome resistance or opposition: convincing proof.

valid

(ˈvælɪd) adj1. having some foundation; based on truth2. (Law) legally acceptable: a valid licence. 3. (Law) a. having legal force; effectiveb. having legal authority; binding4. having some force or cogency: a valid point in a debate. 5. (Logic) logic (of an inference or argument) having premises and conclusion so related that whenever the former are true the latter must also be true, esp (formally valid) when the inference is justified by the form of the premises and conclusion alone. Thus Tom is a bachelor; therefore Tom is unmarried is valid but not formally so, while today is hot and dry; therefore today is hot is formally valid. Compare invalid²²6. archaic healthy or strong[C16: from Latin validus robust, from valēre to be strong] ˈvalidly adv validity, ˈvalidness n

val•id

(ˈvæl ɪd)

adj. 1. sound; just; well-founded. 2. producing the desired result; effective: a valid remedy. 3. having force, weight, or cogency; authoritative. 4. legally sound, effective, or binding: a valid contract. 5. (of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction. 6. Archaic. robust; healthy. [1565–75; < Latin validus strong =val(ēre) to be strong + -idus -id⁴] val′id•ly, adv. val′id•ness, n.

Thesaurus

Adj.	1.	valid - well grounded in logic or truth or having legal force; "a valid inference"; "a valid argument"; "a valid contract"legitimate - of marriages and offspring; recognized as lawfulreasonable, sensible - showing reason or sound judgment; "a sensible choice"; "a sensible person"invalid - having no cogency or legal force; "invalid reasoning"; "an invalid driver's license"
	2.	valid - still legally acceptable; "the license is still valid"unexpired - not having come to an end or been terminated by passage of time; "elected to fill the senator's unexpired term"; "an unexpired driver's license"

valid

adjective1. sound, good, reasonable, just, telling, powerful, convincing, substantial, acceptable, sensible, rational, logical, viable, credible, sustainable, plausible, conclusive, weighty, well-founded, cogent, well-grounded Both sides have made valid points.
sound weak, false, unacceptable, spurious, unrealistic, bogus, untrue, sham, unfounded, illogical, baseless, unrecognized, fallacious2. legal, official, legitimate, correct, genuine, proper, in effect, authentic, in force, lawful, bona fide, legally binding, signed and sealed For foreign holidays you will need a valid passport.
legal illegal, unofficial, unlawful, invalid, inoperative

valid

adjective1. Based on good judgment, reasoning, or evidence:cogent, just, solid, sound, tight, well-founded, well-grounded.2. Worthy of belief, as because of precision or faithfulness to an original:authentic, authoritative, convincing, credible, faithful, true, trustworthy.

Translations

有效的正当的

valid

(ˈvӕlid) adjective1. (of reasons, arguments etc) true; reasonable or acceptable. That is not a valid excuse. 正當的，合理的 正当的2. legally effective; having legal force. He has a valid passport. 有效的 有效的ˈvalidly adverb 有效地，正當地 有效地，正当地

valid

→ 有效的zhCN