- deep
- deepen
- deepened
- depend
- depended
- dipped
- dupe
- duped
- epee
- ninepin
- nipped
- peed
- peen
- peep
- peeped
- pend
- pended
- penne
- penned
- pepped
- pied
- pine
- pined
- pinned
- pinniped
- pinup
- pipe
- piped
- pippin
- punned
- unpen
- unpenned
- unpin
- unpinned
- unzip
- unzipped
- upend
- upended
- upped
- zipped