Sterkel rhymes with:
terkel, turkel, berkel, birchall, birkel, burchell, burkel, burkle, circle, encircle, great-circle, heterocercal, merkel, merkle, percle, pirkl, pirkle, terkel, turkel, urkel, zirkel, zirkle
Sterkel sounds like:
satirical, starkel, starkly, straggle, striegel, struggle, sturgell, sturgill