Collateral rhymes with:
unilateral, bilateral, lateral, multilateral, plurilateral, trilateral, unilateral, bilateral, lateral, multilateral, plurilateral, trilateral, unilateral
Collateral sounds like:
caldrello, cultural, culturally
unilateral, bilateral, lateral, multilateral, plurilateral, trilateral, unilateral, bilateral, lateral, multilateral, plurilateral, trilateral, unilateral
caldrello, cultural, culturally