ROD
RODDED
RODDING
RODDINGS
RODE
RODED
RODENT
RODENTICIDE
RODENTICIDES
RODENTS
RODEO
RODEOED
RODEOING
RODEOS
RODES
RODEWAY
RODEWAYS
RODFISHER
RODFISHERS
RODFISHING
RODFISHINGS
RODGERSIA
RODGERSIAS
RODING
RODINGS
RODLESS
RODLIKE
RODMAN
RODMEN
RODOMONTADE
RODOMONTADED
RODOMONTADER
RODOMONTADERS
RODOMONTADES
RODOMONTADING
RODS
RODSMAN
RODSMEN
RODSTER
RODSTERS

40 words start with ROD.