fallaciter
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
Latin > English
fallaciter fallacius, fallicissime ADV :: deceptively/deceitfully, with intent to deceive; falsely, in misleading manner
Latin > English (Lewis & Short)
fallācĭter: adv., v. fallax.
Latin > French (Gaffiot 2016)
fallācĭtĕr¹⁴ (fallax), d’une manière trompeuse : Cic. Off. 3, 68 || -cissime Cic. Har. 48.
Latin > German (Georges)
fallāciter, Adv. (fallax), mit Betrug, betrügerisch, ränkevoll, Cic. de off. 3, 68 u.a. – Superl., fallacissime adulteratur Indica murra, Plin. 12, 71.