12-Letter Words End with 'onal'

There are 70 12-letter words that end with 'onal'.

bifunctional	aberrational	adaptational
annexational	antinational	antirational
apparitional	appositional	aspirational
declensional	definitional	depositional
derivational	difunctional	digressional
dilatational	distortional	complexional
conceptional	concessional	confessional
connectional	convectional	conventional
conversional	correctional	maturational
excavational	expositional	expressional
levitational	limitational	motivational
motoneuronal	foundational	generational
imbibitional	indicational	inflectional
inhalational	innovational	intonational
invitational	invocational	involutional
irrotational	navigational	nonemotional
nonfictional	occupational	populational
possessional	salutational	perceptional
perorational	speciational	oppositional
recreational	reflectional	precessional
processional	productional	professional
projectional	proportional	repetitional
reputational	successional	transitional
vegetational

Note: These 70 12-letter words that end with 'onal' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words end with ional, gonal, sonal, ronal, tonal, monal, zonal, conal, lonal, honal, oonal, yonal, bonal, eonal, xonal.

5-letter words end with 'onal' (2)
6-letter words end with 'onal' (7)
7-letter words end with 'onal' (7)
8-letter words end with 'onal' (25)
9-letter words end with 'onal' (33)
10-letter words end with 'onal' (45)
11-letter words end with 'onal' (62)
12-letter words end with 'onal' (70)
13-letter words end with 'onal' (88)
14-letter words end with 'onal' (43)
15-letter words end with 'onal' (34)