15-Letter Words Start with 'b'

There are 68 15-letter words that start with 'b'.

backscatterings	bacteriological
bacteriologists	bacteriophagies
barbarousnesses	barefacednesses
basidiomycetous	bastardizations
bathymetrically	beauteousnesses
beautifications	beautifulnesses
believabilities	belongingnesses
benightednesses	benzanthracenes
benzodiazepines	bibliographical
bibliotherapies	bidialectalisms
bidirectionally	bioavailability
biodegradations	bioengineerings
biogeochemicals	biogeochemistry
biogeographical	bioluminescence
biomathematical	biomechanically
bioregionalisms	bioregionalists
bioremediations	biostatistician
biostratigraphy	biosystematists
biotechnologies	biotechnologist
bipartisanships	bipolarizations
bittersweetness	bituminizations
blamelessnesses	blameworthiness
blasphemousness	blaxploitations
bloodguiltiness	bloodlessnesses
bougainvillaeas	bouleversements
boundlessnesses	bounteousnesses
bountifulnesses	bourgeoisifying
boustrophedonic	bowdlerizations
brachycephalies	brainlessnesses
braunschweigers	breathabilities
bremsstrahlungs	bronchodilators
bronchoscopists	brotherlinesses
bumptiousnesses	bureaucratising
bureaucratizing	businesspersons

Note: These 68 15-letter words that start with 'b' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words start with ba, be, bo, br, bi, bu, bl, by, bh, bd, bw.

2-letter words start with 'b' (5)
3-letter words start with 'b' (53)
4-letter words start with 'b' (262)
5-letter words start with 'b' (621)
6-letter words start with 'b' (1,113)
7-letter words start with 'b' (1,668)
8-letter words start with 'b' (1,933)
9-letter words start with 'b' (1,699)
10-letter words start with 'b' (1,105)
11-letter words start with 'b' (704)
12-letter words start with 'b' (392)
13-letter words start with 'b' (222)
14-letter words start with 'b' (128)
15-letter words start with 'b' (68)