Indoor rhymes with:
amador, backdoor, bedore, commodore, ecuador, el-salvador, humidor, isidore, labrador, matador, oradour, outdoor, parador, salvador, san-salvador, stevedore, theodore, troubadour
Indoor sounds like:
imitator, immature, indira, indri, initiator, inter, interior, intra, intrie, intrieri, intro