different between mendacious vs mendaciously

English

Borrowed from Middle French mendacieux, from Latin mend?cium (“lie, untruth”), from mend?x (“lying”).

mendacious (comparative more mendacious, superlative most mendacious)

mendacious +? -ly

mendaciously (comparative more mendaciously, superlative most mendaciously)

In a lying or deceitful manner.
As a politician, he was very adept at speaking mendaciously in public.
I don't think I'm going to buy what she just told me. Her gestures, eye movements, and hesitancy in her tone raised some substantial red flags. Therefore, I have reason to believe she was giving an excuse mendaciously. If you could've witnessed this, you'd know it too!

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