crossbreeding, crossing, hybridisation, hybridization, hybridizing, interbreeding
crossbreed, hybrid
crisscross, Mark
crown of thorns
crossbreed, hybridise, hybridize, interbreed
cover, cut across, cut through, get across, get over, pass over, track, traverse
intersect
baffle, bilk, foil, frustrate, queer, Scotch, spoil, thwart
span, sweep, traverse
bad-tempered, crabbed, crabby, fussy, grouchy, grumpy, ill-tempered
thwartwise, transversal, transverse