15-Letter Words Start with 'amp'

There are 2 15-letter words that start with 'amp'.

amphidiploidies	amphitheatrical

Note: These 2 15-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)
5-letter words start with 'amp' (4)
6-letter words start with 'amp' (5)
7-letter words start with 'amp' (8)
8-letter words start with 'amp' (13)
9-letter words start with 'amp' (18)
10-letter words start with 'amp' (20)
11-letter words start with 'amp' (18)
12-letter words start with 'amp' (10)
13-letter words start with 'amp' (9)
14-letter words start with 'amp' (3)
15-letter words start with 'amp' (2)