12-Letter Words Start with 'a'

There are 741 12-letter words that start with 'a'.

autecologies	authenticate	authenticity
autistically	autoantibody	autochthones
autocratical	autodidactic	autoeciously
autoerotisms	autogenously	autografting
autographies	autographing	autohypnoses
autohypnosis	autohypnotic	autoimmunity
automaticity	automatizing	automobiling
automobilist	automobility	automorphism
autonomously	autorotating	autorotation
autosuggests	autotomizing	autotrophies
autoxidation	auxotrophies	availability
avariciously	avascularity	aversenesses
aversiveness	aviculturist	avitaminoses
avitaminosis	avitaminotic	avuncularity
axiomatizing	axisymmetric	azathioprine
azoospermias	azotobacters	abandonments
abbreviating	abbreviation	abbreviators
abecedarians	aberrational	abjectnesses
abolishments	abolitionary	abolitionism
abolitionist	abominations	aboriginally
abortionists	abortiveness	abracadabras
abrasiveness	abridgements	abruptnesses
absenteeisms	absentminded	absoluteness
absolutistic	absolutizing	absorbancies
absorbencies	absorptances	absorptivity
abstemiously	abstractable	abstractedly
abstractions	abstractness	abstruseness
abstrusities	absurdnesses	academically
academicians	academicisms	acatalectics
accelerandos	accelerating	acceleration
accelerative	accelerators	accentuating
accentuation	acceptations	accessioning
accessorised	accessorises	accessorized
accessorizes	acciaccatura	accidentally
accipitrines	acclamations	acclimations
acclimatised	acclimatises	acclimatized
acclimatizer	acclimatizes	accommodated
accommodates	accommodator	accompanists
accompanying	accomplished	accomplisher
accomplishes	accordionist	accouchement
accouterment	accoutrement	accreditable
accretionary	acculturated	acculturates
accumulating	accumulation	accumulative
accumulators	accurateness	accursedness
acetaldehyde	acetanilides	acetonitrile
acetylations	achievements	achlorhydria
achlorhydric	achromatisms	achromatized
achromatizes	acidimetries	acidulations
acknowledged	acknowledges	acoustically
acousticians	acquaintance	acquiescence
acquirements	acquisitions	acquittances
acriflavines	acrocentrics	acromegalics
acromegalies	acrostically	actabilities
actinometers	actinometric	actinomorphy
actinomycete	actinomycins	activenesses
acupressures	acupunctures	adaptability
adaptational	adaptiveness	adaptivities
additionally	additivities	adenoviruses
adequateness	adhesiveness	adjectivally
adjournments	adjudicating	adjudication
adjudicative	adjudicators	adjudicatory
adjustmental	administered	administrant
administrate	admirability	admonishment
admonitorily	adolescences	adolescently
adoptability	adoptianisms	adoptionisms
adoptionists	adorableness	adrenochrome
adroitnesses	adscititious
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Note: These 741 12-letter words that start with 'a' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words start with an, al, ar, ac, ap, as, am, ad, ab, au, at, ag, af, ai, av, ae, aw, ax, aq, az, aa, ah, ay, ao, ak, aj.

2-letter words start with 'a' (16)
3-letter words start with 'a' (76)
4-letter words start with 'a' (196)
5-letter words start with 'a' (513)
6-letter words start with 'a' (854)
7-letter words start with 'a' (1,292)
8-letter words start with 'a' (1,676)
9-letter words start with 'a' (1,870)
10-letter words start with 'a' (1,431)
11-letter words start with 'a' (1,074)
12-letter words start with 'a' (741)
13-letter words start with 'a' (502)
14-letter words start with 'a' (323)
15-letter words start with 'a' (207)