vulpine

[ vuhl-pahyn, -pin ]

/ ˈvʌl paɪn, -pɪn /

of or resembling a fox.

cunning or crafty.

Origin of vulpine

1620–30; < Latin vulpīnus, equivalent to vulp(ēs) fox + -īnus -ine¹

The reason why the vulpine ravager is spared by these wretches is—that wolves devour children!

Chambers's Edinburgh Journal, No. 446 |Various
Vulpine, vul′pin, adj. relating to or like the fox: cunning.

Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) |Various
Pakenham looked from the one to the other, from the thin, vulpine face to the thin, leonine one.

54-40 or Fight |Emerson Hough
I have watched them cover their tracks with a cunning more than vulpine.

'Tis Sixty Years Since |Charles Francis Adams

More distinct from all the preceding are the members of the alopecoid or vulpine section, which are unknown in South America.

Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 |Various

vulpine

/ (ˈvʌlpaɪn) /

Also: vulpecular (vʌlˈpɛkjʊlə) of, relating to, or resembling a fox

possessing the characteristics often attributed to foxes; crafty, clever, etc

C17: from Latin vulpīnus foxlike, from vulpēs a fox