Wiktionary
speciously
adv. In a specious manner; fallaciously, erroneously.
WordNet
speciously
adv. in a specious manner
Usage examples of "speciously".
Exasperated, as he might speciously allege, by the injuries of a similar nature, he hastened with a few followers to join the standard, and to betray the confidence, of his too-credulous friend.
These acts of prerogative were most speciously excused by the vices of a popular election.
The main question, the divine origin of the religion, is dexterously eluded or speciously conceded.
Exasperated, as he might speciously allege, by the injuries of a similar nature, he hastened with a few followers to join the standard, and to betray the confidence, of his too credulous friend.