oxish + -ly.
oxishly (comparative more oxishly, superlative most oxishly)
- (rare) In a manner like that of an ox.
1925, Aldous Huxley, “Wander-birds”, in Along the Road: Notes and Essays of a Tourist, London: Chatto & Windus, OCLC 806315003, part I (Travel in General), page 29:
The shy young man gazed like a calf, blushed when she looked at him, smiled oxishly when she talked, and forgot to eat his dinner.
2017 July 31, Debi Moore, quoting Benjamin Percy, “Guest Post: Benjamin Percy Faces His Digital Demons for The Dark Net”, in Dread Central, archived from the original on 29 September 2017: I saw The Exorcist when I was thirteen, and I’ve never really recovered from Regan’s grinning gray-green face. The oxishly horned devil in Legend mesmerized me.
in a manner like that of an ox