Antonyms of adj spurious

3 senses of spurious

Sense 1
specious, spurious -- (plausible but false; "a specious claim"; "spurious inferences")

INDIRECT (VIA false) -> true -- (consistent with fact or reality; not false; "the story is true"; "it is undesirable to believe a proposition when there is no ground whatever for supposing it true"- B. Russell; "the true meaning of the statement")

Sense 2
bastardly, misbegot, misbegotten, spurious -- (born out of wedlock; "the dominions of both rulers passed away to their spurious or doubtful offspring"- E.A.Freeman)

INDIRECT (VIA illegitimate) -> legitimate -- (of marriages and offspring; recognized as lawful)

Sense 3
inauthentic, unauthentic, spurious -- (intended to deceive; "a spurious work of art")

INDIRECT (VIA counterfeit) -> genuine, echt -- (not fake or counterfeit; "a genuine Picasso"; "genuine leather")

Similarity of adj spurious

3 senses of spurious

Sense 1
specious, spurious -- (plausible but false; "a specious claim"; "spurious inferences")
       => false (vs. true) -- (not in accordance with the fact or reality or actuality; "gave false testimony under oath"; "false tales of bravery")

Sense 2
bastardly, misbegot, misbegotten, spurious -- (born out of wedlock; "the dominions of both rulers passed away to their spurious or doubtful offspring"- E.A.Freeman)
       => illegitimate (vs. legitimate) -- (of marriages and offspring; not recognized as lawful)

Sense 3
inauthentic, unauthentic, spurious -- (intended to deceive; "a spurious work of art")
       => counterfeit (vs. genuine), imitative -- (not genuine; imitating something superior; "counterfeit emotion"; "counterfeit money"; "counterfeit works of art"; "a counterfeit prince")