Bitterroot rhymes with:
arrowroot, breadfruit, grapefruit, absolute, arrowroot, attribute, bandicoot, breadfruit, constitute, convolute, countersuit, crapshoot, destitute, electrocute, execute, grapefruit, institute, jumpsuit, lawsuit, malamute, offshoot, overshoot, pantsuit, parachute, persecute, prosecute, prostitute, reconstitute, resolute, restitute, spacesuit, substitute, sweatsuit, swimsuit, telecommute, wetsuit, wintermute
Bitterroot sounds like:
battered, bedard, bethard, betrayed, bettered, boatyard, boothroyd, bothered, buttered, butterworth