twelve
Alkali.
racecar
squawkstreak
Six letter words that start and end with R:rafterraiderrancorrangerrapierraptorrasherratherreaderreaperrectorreeferrenderrenterrepairricherrigourringerripperrobberrockerrollerromperrooferrosterrubberrudderrunner
bamboo
baobab.
talenttyrantteapottickettrivettenant
forsho
zealot
Raiden
embalmemblemesteem
A symbol used for counting is a "number." Perhaps the "d" is incorrect.