There are 14 words that start with 'inp'.
| input | inpour | inputs |
| inphase | inpours | inpoured |
| inputted | inputter | inpatient |
| inpouring | inputters | inputting |
| inpatients | inpourings | |
Note: These 14 words that start with 'inp' are found from the USA & Canada version of the tournament Scrabble word list.