fallaciously
Definitions
In a manner based on a mistaken belief or unsound reasoning.
In a way that is deceptive, misleading, or logically invalid.
Examples
The politician fallaciously argued that the new tax policy would benefit everyone, despite clear evidence to the contrary.
He fallaciously assumed that because his opponent was wrong on one issue, their entire platform must be invalid.
Synonyms
erroneously falsely inaccurately incorrectly mistakenly untruthfully spurious
Antonyms
accurately correctly truthfully rightly veraciously factually validly