improprie
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
Latin > English (Lewis & Short)
imprō̆prĭē: (inpr-), adv., v. improprius.
Latin > French (Gaffiot 2016)
imprŏprĭē, improprement : Plin. 10, 29 ; Gell. 17, 1 ; 6, 6, 2.