The ornamental design for a footwearoutsole, as shown and described.
FIG. 1 is a bottom perspective view of a footwear outsole showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a front elevational view thereof; and,
FIG. 6 is a rear elevational view thereof.
The broken lines showing the shoe upper throughout the views represent the portions of the design that form no part of the claim. The broken outlines showing the legible indicia in FIGS. 1, 2, & 5 define the boundary of the design. None of the broken lines or the areas within them forms any part of the claim.