- potluck
- prizefighter
- putdown
- quicksand
- racecar
- racehorse
- railroad
- rainbow
- raincoat
- rearguard
- restroom
- riverbank
- riverboat
- riverside
- roadside
- roommate
- rosebud
- rosebush
- roundhouse
- roundup
- runaway
- runway
- safeguard
- sailboat
- salesman
- sandbox
- sandpaper
- sawmill
- scarecrow
- scatterbrain
- schoolhouse
- scofflaw
- scoreboard
- seaman
- seaport
- sellout
- setback
- setup
- shoelace
- shoemaker
- shoestring
- shortcut
- shortstop
- showoff
- sidecar
- skateboard
- skyline
- skyscraper
- smokestack
- snowflake