There are 18 9-letter words that start with 'amp'.
| amperages | ampersand | amphibian |
| amphibole | amphiboly | amphigory |
| amphioxus | amphipods | ampleness |
| amplidyne | amplified | amplifier |
| amplifies | amplitude | ampullary |
| amputated | amputates | amputator |
Note: These 18 9-letter words that start with 'amp' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with amph, ampl, ampu, ampe, ampi, ampo, amps.
4-letter words start with 'amp' (1)