Merriam-Webster's Dictionary and Thesaurus - Merriam-Webster [1457]
un·af·fect·ed·ly adverb : in an unaffected manner
Synonyms
artlessly, ingenuously, naively, naturally—more at NATURALLY
un·aid·ed adjective : not aided : being without help
Synonyms
alone, independently, singly, solely, unassisted—more at ALONE
un·alien·able adjective : INALIENABLE
un·aligned adjective : not associated with any one of competing international blocs <~ nations>
un·alike adjective : not alike or similar
Synonyms
different, disparate, dissimilar, distinct, distinctive, distinguishable, diverse, other, unlike—more at DIFFERENT
un·al·loyed adjective : not mixed or qualified : PURE <~ happiness>
un·al·ter·able adjective : not capable of being altered or changed
— un·al·ter·ably adverb
Synonyms
fast, fixed, hard-and-fast, immutable, inflexible, unchangeable—more at INFLEXIBLE
un·am·big·u·ous adjective : not ambiguous : having or being a single clearly defined or stated meaning
Synonyms
apparent, broad, clear, clear-cut, distinct, evident, lucid, manifest, obvious, palpable, patent, perspicuous, plain, transparent, unequivocal, unmistakable—more at CLEAR
definite, definitive, explicit, express, specific—more at EXPLICIT
un–Amer·i·can adjective : not characteristic of or consistent with American customs or principles
una·nim·i·ty noun : the quality or state of being unanimous
Synonyms
accord, agreement, concurrence, consensus—more at AGREEMENT
unan·i·mous adjective [ORIGIN: L unanimus, fr. unus one + animus mind]
1 : being of one mind
2 : formed with or indicating the agreement of all
— unan·i·mous·ly adverb
Synonyms
[1, 2] agreeable, amicable, compatible, congenial, harmonious, kindred, united—more at HARMONIOUS
un·an·swer·able adjective : not answerable : not capable of being refuted
Synonyms
incontestable, indisputable, indubitable, irrefutable, undeniable, unquestionable—more at IRREFUTABLE
un·an·tic·i·pat·ed adjective : not expected
Synonyms
unexpected, unforeseen—more at UNEXPECTED
un·ap·peal·ing adjective : not appealing or attractive
Synonyms
grotesque, hideous, ugly, unattractive, unlovely, unsightly, vile—more at UGLY
un·ap·pe·tiz·ing adjective : not appetizing
Synonyms
distasteful, unsavory—more at DISTASTEFUL
un·ap·proach·able adjective 1 : not approachable : physically inaccessible
2 : discouraging intimacies
Synonyms
[1, 2] inaccessible, inconvenient, unattainable, unavailable, unobtainable, unreachable, untouchable—more at INACCESSIBLE
un·arm verb : DISARM
un·armed adjective : not armed or armored
un·ashamed adjective : not ashamed : being without guilt, self-consciousness, or doubt
Synonyms
unabashed, unblushing, unembarrassed—more at UNABASHED
un·asked adjective 1 : not being asked
2 : not requested
Synonyms
unbidden, undesired, uninvited, unsolicited, unsought, unwanted, unwelcome—more at UNSOUGHT
un·as·sail·able adjective : not liable to doubt, challenge, or attack
un·as·sist·ed adjective : not assisted : lacking help
Synonyms
alone, independently, singly, solely, unaided—more at ALONE
un·as·sum·ing adjective : neither bold nor self-assertive
Synonyms
demure, humble, lowly, meek, modest, retiring, unpretentious—more at HUMBLE
un·at·tached adjective 1 : not married or engaged
2 : not joined or united
Synonyms
[1] single, unmarried, unwed—more at SINGLE
[2] detached, disconnected, discrete, freestanding, separate, single, unconnected—more at SEPARATE
un·at·tain·able adjective : not capable of being attained or accomplished
Synonyms
inaccessible, inconvenient, unapproachable, unavailable, unobtainable, unreachable, untouchable—more at INACCESSIBLE
hopeless, impossible, unsolvable, unworkable—more at IMPOSSIBLE
un·at·trac·tive adjective : not attractive : lacking beauty, interest, or charm
Synonyms
grotesque, hideous, ugly, unappealing, unlovely, unsightly, vile—more at UGLY
un·au·then·tic adjective : not authentic
Synonyms