a. [ From Define. ] Capable of being defined, limited, or explained; determinable; describable by definition; ascertainable; as, definable limits; definable distinctions or regulations; definable words. -- De*fin"a*bly, adv. [1913 Webster]

Indefinable

a. Incapable of being defined or described; inexplicable. Bp. Reynolds. [ 1913 Webster ]

Indefinably

adv. In an indefinable manner. [ 1913 Webster ]

Undoubtful

See abolishable.
See absolvable.
See absurd.
See abundant.
See accordant.
See adoptable.
See adventurous.
See affable.
See affectionate.
See afraid.
See alliable.
See allowable.
See alterable.
See ambiguous.
See ambitious.
See amendable.
See -American.
See amusive.
See angular.
See anxious.
See apocryphal.
See apostolic.
See apparent.
See appeasable.
See applausive.
See appreciable.
See apprehensible.
See apprehensive.
See approachable.
See artificial.
See artistic.
See assailable.
See attainable.
See attentive.
See authentic.
See available.
See bailable.
See bearable.
See beautiful.
See beliefful.
See believable.
See beneficial.
See benevolent.
See blamable.
See blemishable.
See blissful.
See boastful.
See bold.
See bookish.
See bounteous.
See bribable.
See brotherly.
See burdensome.
See businesslike.
See busy.
See candid.
See canonical.
See captious.
See careful.
See celestial.
See ceremonious.
See challengeable.
See changeable.
See chary.
See chastisable.
See cheerful.
See cheery.
See childish.
See chivalrous.
See choleric.
See christianlike.
See circumspect.
See civic.
See classible.
See classic.
See classical.
See cleanly.
See clear.
See clerical.
See clerklike.
See close.
See cloudy.
See clubbable.
See coagulable.
See cogitable.
See collectible.
See comic.
See commendable.
See commercial.
See communicable.
See communicative.
See compact.
See companionable.
See compassionate.
See compellable.
See competitive.
See complaisant.
See compliant. See complimentary.
See concealable.
See concurrent.
See conditionate.
See confinable.
See confutable.
See congealable.
See congenial.
See conjugal.
See conjunctive.
See conquerable.
See consecrate.
See containable.
See contaminate.
See contradictable.
See contrite.
See convenable.
See conventional.
See conversable.
See conversant.
See convertible.
See coquettish.
See cordial.
See corpulent.
See correspondent.
See corruptible.
See corruptive.
See costly.
See counselable.
See countable.
See counterfeit.
See courteous.
See courtierlike.
See courtly.
See crafty.
See creatable.
See critical.
See crystalline.
See cultivable.
See curious.
See customary.
See dangerous.
See daughterly.
See dead.
See deceivable.
See decidable.
See decipherable.
See declinable.
See decomposable.
See definable.
See delectable.
See deliberate.
See delightful.
See deliverable.
See democratic.
See demonstrable.
See demonstrative.
See deniable.
See derogatory.
See descendible.
See describable.
See desirable.
See desirous.
See despondent.
See devout.
See diaphanous.
See diligent.
See diminishable.
See discernible.
See disciplinable.
See discordant.
See discoverable.
See dissolvable.
See distinguishable.
See dividable.
See divine.
See domestic.
See doubtful.
[ 1913 Webster ]