absorptivity.noun
inflected form(s).plural.absorptivities
the property of a body that determines the fraction of incident radiation absorbed by the body

abstinence.noun
voluntary.forbearance especially from indulgence of an appetite or craving or from eating some foods 
abstention.noun the act or practice of abstaining
abstinent, abstentious.adjectives
abstinently.adverb

abstruse.adjective
difficult to understand; recondite
abstrusely.adverb
abstruseness.noun
synonym.ambiguous

absurd.adjective
clearly untrue or unreasonable and therefore laughable, ridiculous, ludicrous, etc.; laughably inconsistent with what is true; foolish

academic.adjective
of learning; scholastic; scholarly; of the mental faculties, the mind (not necessarily yet of the heart, the emotions)
adjective-academical
academic 
adverb-academically
in an academic manner

accede, acceded, acceding, accedes.intransitive verbs
consent given often at the insistence of another; concede; to become a party to an agreement or treaty; to arrive at or come into an office or dignity (accede to the throne)
accedence, acceder.noun
accede implies a yielding, often under pressure, of assent or consent (officials caught red handed had no choice but to accede to the demands)-
synonyms.assent, agree, acquiesce, consent, concur, subscribe

accentuate, accentuated, accentuating, accentuates.transitive verbs
to stress or emphasize; intensify; to pronounce with a stress or an accent; to mark with an accent
accentuation-noun

accord, accorded, according, accords.transitive verbs
to make, agree or harmonize; unity

accordance.noun
agreement; conformity.(in accordance with your instructions); the act of granting

accordingly.adverb
in accordance; correspondingly; consequently

accost.transitive verb
to approach and speak to

accouterment.noun-usually used in.plural-– accouterments
equipment, trappings (a soldier's outfit usually not including clothes and weapons); accessory items of clothing or equipment

accretion.noun
the process of growth or enlargement by a gradual buildup, as an increase by external addition or accumulation (as by adhesion of external parts or particles); the increase of land by the action of natural forces; an extraneous addition (accretions of grime) 
accretionary, accretive.adjectives

acrimonious.adjective
bitter and sharp in language or tone; rancorous: an acrimonious on air exchange between the candidate and the anchorperson
acrimoniously.adverb
acrimoniousness.noun

accrue, accrued, accruing, accrues.verbs
intransitive verb use.to come to one as a gain, an addition, or an increment.(interest accruing in my savings account); to increase, accumulate, or come about as a result of growth (common sense that accrues with experience); to come into existence as a claim that is legally enforceable; to be added as a natural increase, natural growth; to increase naturally
accrual, accrument.nouns
transitive verb use.to accumulate over time (I have accrued 15 days of sick leave)

absolute.adjective
perfect in quality or nature; complete; not mixed; pure; not limited by restrictions or exceptions; unconditional (absolute trust); unqualified in extent or degree; total  (absolute silence); nconstrained by constitutional or other provisions: an absolute ruler; not to be doubted or questioned; positive (absolute proof)
absolute.noun
something that is absolute; something regarded as independent of and unrelated to anything else; what doesn't accept
limits, restrictions, or conditions referred to itself, its own will,
or attribution; without any limitation or condition; the word is derived by the Latin absolutus meaning without any link
Grammar.-.indicates what is - a construction independent by the term
Mathematics.-.the absolute worth of a number is the real relative number, without algebraic sign
Physics.-.the opposite to what is relative; the system
(of a unit of measurement) is 'absolute' when the adopted unities in this system are invariant one in every time and every place, and are defined by theory and without any reference to experimental results
Philosophy.-.what doesn't depend on nothing else, to affirm its own reality
absolutely.adverb
definitely and completely; unquestionably

acquiesce.intransitive verb-pronunciation: ak we s
inflected form(s)-acquiesced; acquiescing
to accept, comply, or submit tacitly or passively, or quietly without protesting; assent without enthusiasm
synonym.assent
acquiesce implies tacit acceptance or forbearance of opposition (acquiesced to his boss's wishes) 
agree sometimes implies previous difference of opinion or attempts at persuasion 
(finally agreed to come along)
acquiescence.noun
passive assent or agreement without protest; the state of being acquiescent
acquiescent.adjective
disposed or willing to acquiesce; obedient
acquiescently.adverb

acquire, acquired, acquiring, acquires.transitive verbs
to get or gain by one's own efforts; to get possession of
acquirable.adjective
acquirer.noun

acquisition.noun
the act of acquiring; something acquired, especially an addition to an established categoryor group

altercation.noun
a vehement.quarrel
altercate, altercated, altercating, altercates.intransitive verbs
to argue or dispute vehemently; wrangle

auxiliary.adjective
giving assistance or support; helping; acting as a subsidiary; supplementary (the main library and its auxiliary branches); held in or used as a reserve (auxiliary troops, an auxiliary power generator); equipped with a motor as well as sails
Grammar.–.of, relating to, or being an auxiliary verb
auxiliary.noun,.plural-auxiliaries
an individual or a group that assists or functions in a supporting capacity (a volunteers' auxiliary at a hospital)

annex, annexed, annexing, annexes.transitive verbs
to append or attach, especially to a larger or more significant thing; to incorporate (territory) into an existing political unit such as a country, state, county, or city; to add or attach, as an attribute, a condition, or a consequence
annex.noun
a building added on to a larger one or an auxiliary building situated near a main one; an addition, such as an appendix, that is made to a record or other document
annexation, annexationism, annexationist.nouns
annexational.adjective