adv. 1 (cx obsolete English) openly, publicly, without secrecy. 2 (context archaic English) clearly, plainly.
The Collaborative International Dictionary
Apertly \A*pert"ly\, adv. Openly; clearly. [Archaic]
Usage examples of "apertly".
And childe Leopold did up his beaver for to pleasure him and took apertly somewhat in amity for he never drank no manner of mead which he then put by and anon full privily he voided the more part in his neighbour glass and his neighbour nist not of this wile.