hornilyadv.

/ˈhɔːnɪli/Etymology: < horny adj. + -ly suffix2.
the world > matter > constitution of matter > other specific kinds of texture > [adverb] > like horn
1873 R. Broughton I. 280 I am now becoming hornily hard.
This entry has not yet been fully updated (first published 1899; most recently modified version published online March 2018).