Find Synonyms
valid Synonyms
Another word for valid
Choosing another word for valid depends on context, so the 16 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
• adjective (Context 1)
Having a sound basis in logic, fact, or reason; reasonable or cogent.
Usage Example
"The committee raised several sound concerns regarding the environmental impact of the proposed construction."
Strongest
sound
well-founded
reasonable
legitimate
logical
Strong
cogent
justifiable
credible
• adjective (Context 2)
Legally or officially acceptable, binding, and in force; not expired or revoked.
Usage Example
"Travelers must present a legitimate passport and visa before boarding the international flight."
Strongest
legitimate
binding
Strong
legal
lawful
authentic
bona fide
official
• adjective (Context 3)
(of a logical argument or deduction) Constructed such that if the premises are true, the conclusion must necessarily be true.
Usage Example
"A syllogism can be formally logical even if one of its underlying premises is factually mistaken."
Strongest
logical
Strong
consistent
coherent
Opposites of valid
The opposite of valid shifts depending on context. Common opposites include:
invalid
void
expired
groundless
fallacious
baseless
unfounded
illogical
Cite this Entry
Wordmom. (2026). Synonyms for Valid. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/valid