- deepen
- deepened
- denied
- denizen
- denude
- denuded
- depend
- depended
- dine
- dined
- dune
- dunned
- ended
- endue
- endued
- ennui
- indeed
- indie
- innie
- need
- needed
- nene
- nine
- ninepin
- nipped
- nude
- nudie
- peen
- pend
- pended
- penne
- penned
- pine
- pined
- pinned
- pinniped
- pinup
- pippin
- punned
- undid
- undue
- unneeded
- unpen
- unpenned
- unpin
- unpinned
- unzip
- unzipped
- upend
- upended
- zine