15-Letter Words Start with 'as'

There are 13 15-letter words that start with 'as'.

assertivenesses	assiduousnesses
assignabilities	assimilationism
assimilationist	associationisms
associationists	associativities
astrobiologists	astronautically
astrophotograph	astrophysically
astrophysicists

Note: These 13 15-letter words that start with 'as' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words start with ass, ast, asp, asc, ash, asy, ask, ase, asa, asb, asi, asl, asw, asd, aso, asr, asq, asu.

3-letter words start with 'as' (4)
4-letter words start with 'as' (5)
5-letter words start with 'as' (24)
6-letter words start with 'as' (55)
7-letter words start with 'as' (81)
8-letter words start with 'as' (104)
9-letter words start with 'as' (139)
10-letter words start with 'as' (109)
11-letter words start with 'as' (63)
12-letter words start with 'as' (45)
13-letter words start with 'as' (33)
14-letter words start with 'as' (19)
15-letter words start with 'as' (13)