Guilbault rhymes with:
guilbeau, guilbeault, guilbeaux, guilbeau, guilbeault, guilbeaux, guilbeau, guilbeault, guilbeaux, barbeau, beau, beaux, bebeau, bibeau, bibeault, bo, boe, boeh, bourbeau, bowe, cabo, chabot, deboe, dubeau, gibeau, gibeault, guilbeau, guilbeault, guilbeaux, labeau, lambeau, lebeau, lebow, lebowe, m'bow, rambeau, tebeau, thebeau, thibault, thibeau, thibeaux, thiebaud, turbot
Guilbault sounds like:
galipault, guilbeault, gullibility