undecremented
That has not been decremented.

undecried
Not decried.

undecryptable
That cannot be decrypted.

undecrypted
Not decrypted.

undecuple
having 11 parts or members
11 times as much

undecylic
Related to, derived from, or containing undecyl.

undedicated
Not dedicated.

undeduced
Not deduced.

undeducible
Not deducible.

undeducted
Not deducted.

undeductive
Not deductive.

undeemed
Not deemed.

undeep
Not deep; shallow.

undeerlike
Not deerlike.

undef
Abbreviation of undefined.

undefaceable
Not defaceable.

undefaced
Not having been defaced.

undefalcated
Not defalcated.

undefamed
Not defamed.

undefaulted
Not defaulted upon.

undefaulting
That does not default.

undefeatable
Not defeatable; impossible to defeat.

undefeatables
plural of undefeatable

undefeated
Never defeated; always victorious.

undefecated
Unpurified.

undefectible
Alternative form of indefectible.

undefective
Not defective.

undefendable
Not capable of being defended

undefended
Not defended.

undefensible
Not defensible.

undefensive
Not defensive.

undeferential
Not showing appropriate respect or courtesy.

undeferrable
Not deferrable.

undeferred
Not deferred.

undefiable
That cannot be defied.

undefiant
Not defiant.

undeficient
Not deficient.

undefied
Not defied; unopposed, unresisted.

undefilable
Incapable of being defiled.

undefiled
Free from stain, blemish, evil or corruption; immaculate; uncorrupted.

undefinable
Not definable.

undefinables
plural of undefinable

undefinite
indefinite

undefinitive
Not definitive.

undefinitized
Not definitized.

undeflated
Not deflated.

undeflectable
Not deflectable.

undeflected
Not deflected.

undeflectible
Alternative form of undeflectable.

undeflowered
Not having been deflowered; pure, virginal.

undefoliated
Not defoliated.

undeformable
Not capable of being deformed.

undefrauded
Not having been defrauded.

undefrayed
Not defrayed.

undefrosted
Not defrosted.

undeft
Not deft.

undefused
Not defused.

undegassed
From which the gas has not been removed

undegenerate
Not degenerate.

undegenerated
Not degenerated

undegenerating
Not degenerating.

undegradable
That is not easily degraded

undegraded
Not degraded

undegrading
Not degrading.

undegranulated
Not degranulated

undegummed
Not degummed; not (yet) having had gum removed.

undehiscent
Not dehiscent

undehumanized
Not dehumanized.

undehusked
not dehusked

undehydrated
Not dehydrated.

undeified
simple past and past participle of undeify

undeistic
Not deistic.

undejected
Not dejected.

undelayable
Not delayable.

undelayed
Not delayed.

undelaying
Not delaying; prompt.

undelectable
Not delectable.

undelegated
nondelegated

undeletable
That cannot be deleted; indelible.

undeleterious
Not deleterious.

undeliberate
Not deliberate.

undeliberated
Not deliberated.

undeliberating
Not deliberating.

undeliberative
Not deliberative.

undelicate
Synonym of indelicate.

undelicious
Not delicious; disagreeable to the senses.

undelightful
Not delightful.

undelighting
Not causing delight.

undelightsome
Not delightsome.

undelimitated
Not delimitated.

undelimited
Not delimited.

undelineated
Not delineated.

undelirious
Not delirious.

undeliverable
Not able to be delivered.

undeliverables
plural of undeliverable

undelivered
Not delivered.

undeludable
That cannot be deluded.

undeluded
Not deluded.

undeluged
Not deluged.

undelusional
Not delusional.

undelusive
Not delusive.

undelved
Not delved or dug.

undemagnetizable
Not demagnetizable.

undemanded
not asked for, not demanded, unsought

undemanding
Not demanding

undemarcated
Not demarcated.

undemeaned
Not demeaned.

undemeaning
Not demeaning.

undemented
Not demented.

undemilitarized
Not demilitarized.

undemineralized
Not demineralized
Misspelling of undermineralized.

undemised
Not demised.

undemocratic
Not democratic.

undemocratizable
Incapable of being democratized.

undemocratized
Not yet made democratic; not democratized

undemolishable
Not demolishable.

undemolished
Not demolished.

undemonic
Not demonic.

undemonized
Not demonized.

undemonstrable
Not demonstrable.

undemonstratable
That cannot be demonstrated.

undemonstrated
Not demonstrated.

undemonstrative
Not given to showing emotion or feelings; reserved or distant.

undemoralized
Not demoralized.

undemoralizing
Not demoralizing.

undemoted
Not demoted.

undemure
Not demure.

undemurring
Not demurring.

undenary
In base (radix) eleven.

undenatured
Not denatured.

undeniable
Irrefutable, or impossible to deny.

undenied
Not denied

undenizened
Without denizens; unpopulated.

undenoised
From which noise has not been removed.

undenominated
Not denominated

undenominational
Nondenominational: not denominational, used e.g. of a church.

undenotable
That cannot be denoted.

undenoted
Not denoted.

undenounceable
unable to be denounced; unimpeachable

undenounced
Not denounced.

undensitized
Not densitized

undentable
Not dentable; impossible to dent.

undenticulated
Not denticulated

undenuded
Not denuded.

undeodorized
Not deodorized.

undeparted
Not departed.

undeparting
That does not depart.

undepartmentalized
Not divided into departments; not departmentalized

undependable
Not dependable.

undepended
Synonym of independent.

undependent
Not dependent.

undephlegmated
Not dephlegmated.

undepictable
Impossible to depict.

undepicted
Not having been depicted.

undepletable
Impossible to deplete.

undepleted
that has not been depleted

undeplored
Not deplored.

undeployable
That cannot be deployed.

undeployed
Not deployed.

undeportable
Not deportable.

undeported
Not deported.

undeposable
not deposable

undeposed
Not deposed.

undeposited
Not deposited.

undeprecated
Not deprecated.

undepreciated
Not depreciated.

undepressible
Not depressible.

undepressing
Not depressing.

undeprivable
Of which one cannot be deprived.

undeprived
Not deprived.

undeprotonated
Not deprotonated

undepurated
Not depurated.

undeputed
Not deputed.

undeputized
Not deputized.

under
Beneath; below; at or to the bottom of, or the area covered or surmounted by.
Beneath; below; at or to the bottom of, or the area covered or surmounted by.
From one side of to the other, passing beneath.
Less than.
Subject to.
Subject to.
Within the category, classification or heading of.
In the face of; in response to (some attacking force).
Using or adopting (a name, identity, etc.).

underabundant
Insufficiently abundant

underaccommodative
insufficiently accommodative

underaccomplished
Insufficiently accomplished; not having done or achieved enough.

underacetylated
Insufficiently acetylated

underacinated
Not deracinated.

underacknowledged
Having received insufficient acknowledgement.

underactivated
Less than normally activated.

underactive
Less than normally active.

underactuated
Insufficiently actuated.

underacylated
Less than normally acylated

underadditive
Less than additive

underadherent
Showing underadherence to a treatment; insufficiently adherent.

underadvantaged
Having inadequate or below-average advantages.

underadvertised
Inadequately advertised.

underage
Below the legal age (usually age 18) for some activity, such as consuming alcohol or engaging in sexual intercourse.
Not yet a legal adult; still a minor.
Limited to players below a certain age; junior.

underaged
Underage; being or occurring below the legal age for a given activity.

underages
plural of underage

underailable
That cannot derail, or be derailed.

underailed
Not derailed.

underanalyzed
Insufficiently analyzed.

underanesthetized
Inadequately anesthetized.

underanged
Not deranged or disrupted.

underanimated
Inadequately animated.

underannotated
simple past and past participle of underannotate

underanticoagulated
Insufficiently anticoagulated (having received warfarin therapy for only a short time)

underappreciative
Insufficiently appreciative; ungrateful.