1.  loopy(a = adj.pert) - consisting of or covered with or having loops;
Derived form noun loop₂

2.  loopy(s = adj.all) around the bend, balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kookie, kooky, loco, loony, nuts, nutty, round the bend, wacky, whacky - informal or slang terms for mentally irregular; "it used to drive my husband balmy"

loopy, adj. (loopier, loopiest)
1 sl. crazy.
2 having many loops.