prentice or 'prentice /prenˈtis/ aphetic for apprentice

• backwardations
• backward-looking
• backwardly
• backwardness
• backwardnesses
• backwards
• backwards-compatible
• backwash
• backwashed
• backwashes
• backwashing
• back water
• backwater
• backwaters
• backwoods
• backwoodsman
• backwoodsmen
• backword
• backwords
• backwork
• backworker
• backworkers
• backworks
• back-wounding
• backyard