Definify.com

Webster 1913 Edition

Fallacious

Fal-la′cious

,
Adj.
[L.
fallaciosus
, fr.
fallacia
: cf. F.
fallacieux
. See
Fallacy
.]
Embodying or pertaining to a fallacy; illogical; fitted to deceive; misleading; delusive;
as,
fallacious
arguments or reasoning
.
–
Fal-la′cious-ly
,
adv.
-
Fal-la′cious-ness
,
Noun.

Webster 1828 Edition

Fallacious

FALLA'CIOUS

,
Adj.
[L. fallax, from fallo, to deceive. See Fail.]
1.
Deceptive; deceiving; deceitful; wearing a false appearance; misleading; producing error or mistake; sophistical; applied to things only; as a fallacious argument or proposition; a fallacious appearance.
2.
Deceitful; false; not well founded; producing disappointment; mocking expectation; as a fallacious hope.

Similar Results