- newsstand
- newsworthy
- nightclub
- nightfall
- nightgown
- nightmare
- nighttime
- nosebleed
- notebook
- notepad
- noteworthy
- numbskull
- nutcracker
- nuthouse
- nutshell
- oatmeal
- oddball
- offbeat
- offset
- offside
- oilcan
- onceover
- oncoming
- ongoing
- onset
- onside
- outcast
- outdoor
- outfield
- outgoing
- outlaw
- outlet
- outlive
- outlook
- output
- outrage
- outshine
- outshine
- outsize
- outwit
- outworn
- overact
- overall
- overawe
- overcast
- overcharge
- overcoat
- overdo
- overdone
- overdrive