Zēal'ōus-ly, adv.
adv. 1. In a zealous manner; with passionate ardor; with eagerness.
It is good to be zealously affected always in a good thing. Gal. iv. 18.
Sense 2. Religiously. [Obs. and rare.]
A father or a brother may be hated zealously, and loved civilly or naturally. Milton.