unknownly

Adverb

1. Mysteriously, without a known reason or cause.
   • Just then it open’d; and th’enclosed Grain / Unknownly vanisht; and then clos’d again - 1646, Francis Quarles, The Shepheards Oracles: Delivered in Certain Eglogues, page 64:
2. Obscurely, without being known or noticed.
   • Attentively the grey horse wended / (by many a mighty fist forfended) / through men that lay unknownly dying, / and trod on shallow blackened grass. - 1960, J.B. Leishman, Selected Works, translation of original by...
3. Alternative form of unknowingly, without knowledge; without intent.
   • if any thing of that nature be brought in, and desired to be lodged with the Society [...] they should be obliged to shew it first to the President (for fear of lodging unknownly ballads and buffooneries in these...
   • In 1826 it was discovered that the log church and the dwellings on the north side of the creek had unknownly been built on lands set aside by an act of Congress for school purposes, the subsequent rent or sale of which...