instealing

in +‎ steal (“sneak”) +‎ -ing

instealing

1. entering or manifesting surreptitiously
   • 1860, B. P, Alice: and other poems, by B.P., page 263:

     Of promise; and, (of both these blessings born / And nurtured), a sweet sense of present healing, / Through sootheful nerve and fibre soft instealing, ...

   • 1847, Edward Bishop Elliott, Horæ Apocalypticæ: Or, A Commentary on the Apocalypse, Critical and Historical : Including Also an Examination of the Chief Prophecies of Daniel : Illustrated by an Apocalyptic Chart, and Engravings from Medals and Other Extant Monuments of Antiquity, page 267:

     Here will appear the Lord's own antidote against the instealing apostacy.