Wallaby rhymes with:
willoughby, barnaby, burnaby, farabee, huckabee, huckaby, jackoby, larabee, larrabee, lockaby, sotheby, willoughby
Wallaby sounds like:
walby, wallop, walp, welby, welp, willapa, wolf, wolfe, wolff, wolpe, woolf, woulfe, wulf, wulff