anachronic vs. anachronistic

acetose vs. vinegary

acetous vs. vinegary

amazed vs. stunned

astonied vs. stunned

astonished vs. stunned

astounded vs. stunned

antsy vs. fretful

anxious vs. uneasy

anxious vs. dying

apodeictic vs. apodictic

atonal vs. unkeyed

atoxic vs. nontoxic

aweary vs. weary

acclivitous vs. uphill

amalgamate vs. consolidated

amalgamate vs. mix

anticlimactic vs. anticlimactical

amalgamated vs. consolidated

accelerative vs. acceleratory

assailable vs. open

airless vs. close

asymptomatic vs. symptomless

ailing vs. sickly

airsick vs. carsick

airsick vs. seasick

alimental vs. nourishing

alimental vs. nutrient

alimental vs. nutritious

alimental vs. nutritive

alimental vs. alimentary

Abkhaz vs. Abkhazian

anchoritic vs. eremitic

anchoritic vs. eremitical

anchoritic vs. hermitic

anchoritic vs. hermitical

alar vs. alary

alar vs. aliform

alar vs. axillary

alate vs. alated

asinine vs. vacuous

applaudable vs. commendable

anhydrous vs. straight

abasic vs. abatic

amenorrheal vs. amenorrhoeal

agrobiologic vs. agrobiological

anodal vs. anodic

aminic vs. amino

agrologic vs. agrological

agronomic vs. agronomical

ammoniac vs. ammoniacal

alabaster vs. alabastrine

acapnial vs. acapnic

acapnic vs. acapnotic

amnionic vs. amniotic

amnic vs. amniotic

antennal vs. antennary

amphitheatric vs. amphitheatrical

anthropic vs. anthropical

albinal vs. albinotic

albinal vs. albinic

albinal vs. albinistic

anthropogenetic vs. anthropogenic

ampullar vs. ampullary

anthropometric vs. anthropometrical

alchemic vs. alchemical

anticancer vs. antineoplastic

anticancer vs. antitumor

anticancer vs. antitumour

anaglyphic vs. anaglyphical

anaglyphic vs. anaglyptic

anaglyphic vs. anaglyptical

acinar vs. acinous

acinar vs. acinose

acinar vs. acinic

alchemistic vs. alchemistical

anagogic vs. anagogical

acrogenic vs. acrogenous

anagrammatic vs. anagrammatical

algometric vs. algometrical

actinometric vs. actinometrical

Algonkian vs. Algonquian

Algonquian vs. Algonquin

antimonic vs. antimonious

actinomycetal vs. actinomycetous

aculeate vs. aculeated

antiphonal vs. antiphonary

antiphonal vs. responsive

androgenetic vs. androgenous

antipodal vs. antipodean

anemometric vs. anemometrical

adjudicative vs. adjudicatory

antitypic vs. antitypical

allelic vs. allelomorphic

anencephalic vs. anencephalous

adnexal vs. annexal

anuran vs. batrachian

anuran vs. salientian

anuran vs. frog

anginal vs. anginose

anginal vs. anginous

adrenergic vs. sympathomimetic

anuretic vs. anuric

angiocarpic vs. angiocarpous

allotropic vs. allotropical

alphanumeric vs. alphanumerical

alphameric vs. alphanumeric

alphamerical vs. alphanumeric

ASAT vs. antisatellite

animist vs. animistic

anisogamic vs. anisogamous

alveolar vs. dental

aeronautic vs. aeronautical

ameboid vs. amoeboid

aesculapian vs. medical

annelid vs. annelidan

affixal vs. affixial

amenorrheal vs. amenorrheic

amenorrheal vs. amenorrhoeic

articular vs. articulary

apoplectiform vs. apoplectoid

articulative vs. articulatory

avifaunal vs. avifaunistic

artiodactyl vs. artiodactylous

appositional vs. appositive

ascosporic vs. ascosporous

arachnidian vs. arachnoid

arachnoid vs. spidery

arachnoid vs. spiderlike

arachnoid vs. spiderly

arachnid vs. arachnoid

azotemic vs. uremic

azotemic vs. uraemic

astronautic vs. astronautical

Aramaean vs. Aramean

atactic vs. ataxic

araneidal vs. araneidan

arbitral vs. arbitrational

atrioventricular vs. auriculoventricular

archaeological vs. archeological

archaeologic vs. archaeological

archaeological vs. archeologic

auricular vs. otic

archangelic vs. archangelical

auroral vs. aurorean

archegonial vs. archegoniate

auric vs. aurous

archepiscopal vs. archiepiscopal

aortal vs. aortic

auctorial vs. authorial

areolar vs. areolate

aphaeretic vs. apheretic

autobiographic vs. autobiographical

araceous vs. aroid

aroid vs. arum

apneic vs. apnoeic

autophytic vs. autotrophic

apogametic vs. apogamic

apogamic vs. apogamous

arthropodal vs. arthropodan

arthropodal vs. arthropodous

arthrosporic vs. arthrosporous

avellan vs. avellane

aquacultural vs. aquicultural

aquicultural vs. hydroponic

astral vs. stellar

atmospheric vs. atmospherical

acronymic vs. acronymous

apostolic vs. apostolical

apostolic vs. papal

apostolic vs. pontifical

antifungal vs. fungicidal

antifungal vs. fungicide

antifungal vs. antimycotic

antibacterial vs. bactericide

algebraic vs. algebraical

acoustic vs. acoustical

audile vs. auditory

auditive vs. auditory

anatomic vs. anatomical

architectonic vs. tectonic

anapaestic vs. anapestic

aetiological vs. etiological

aetiologic vs. etiological

ab vs. abdominal

Amerind vs. Indian

Amerindic vs. Indian

Argentine vs. Argentinian

Asian vs. Asiatic

Afghan vs. Afghani

Afghani vs. Afghanistani

artefactual vs. artifactual

aneurismal vs. aneurysmal

aneurysmal vs. aneurysmatic

aneurismatic vs. aneurysmal

atheromatic vs. atheromatous

Aristotelean vs. Aristotelian

Aristotelian vs. Aristotelic