Definition of "sencelesse"

So now all three one sencelesse lumpe remaine, / Enwallow'd in his owne blacke bloudy gore […].

1596, Edmund Spenser, “Book V, Canto XI”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie

shall sensive things be so sencelesse as to resist sence?

a. 1587, Philippe Sidnei [i.e., Philip Sidney], “(please specify the page number)”, in Fulke Greville, Matthew Gwinne, and John Florio, editors, The Countesse of Pembrokes Arcadia [The New Arcadia], London: […] [John Windet] for William Ponsonbie, published 1590; republished in Albert Feuillerat, editor, The Countesse of Pembrokes Arcadia (Cambridge English Classics: The Complete Works of Sir Philip Sidney; I), Cambridge, Cambridgeshire: University Press, 1912,

And ſithence the very thunder-lightning of your admirable eloquence is ſufficiently available to ſtrike them with a lame palſie of tongue (if they be not already ſmitten with a ſenceleſſe apoplexy in head, which may eaſely enſue ſuch contagious catharres and reumes, as I am privy ſome of them have been grievouſly diſſeaſed withall), miſſe not, but hitt them ſuerly home, as they deſerve with Supererogation.

1593, Gabriel Harvey, “To right worshipfull his especiall dear friend, M. Gabriell Harvey, Doctour of Law”, in Pierces Supererogation: Or A New Prayse of the Old Asse, London: […] Iohn Wolfe; republished as John Payne Collier, editor, Pierces Supererogation: Or A New Prayse of the Old Asse. A Preparative to Certaine Larger Discourses, Intituled Nashes S. Fame (Miscellaneous Tracts. Temp. Eliz. & Jac. I; no. 8), [London: [s.n.], 1870], page 13A