v. 1 perforate, pepper, puncture, pierce, honeycomb The back of the bookcase was riddled with tiny worm-holes 2 penetrate, infest, infect, pervade, permeate, fill, spread An investigation revealed that the entire department was riddled with corruption
n. 3 sieve, colander or cullender, strainer, grating, screen, sifter, filter He shovelled the dirt through the riddle to sift out the larger stones