1501
unbeliever
especially when something unusual or embarrassing (EMBAR-RASS) happens: His trousers fell down but he appeared quite unabashed. | an unabashed stare
un·a·bat·ed /ˌʌnəbeɪtɪd/ adj fml (of a wind, a person's strength etc) without losing force: The storm continued unabated/unabated violence.
un·a·ble /ʌnˈeɪbəl/ adj [F+to-v] rather fml not able: He seems unable to understand the simplest instructions. | I'd like to go, but I'm unable to. → see also INABILITY
U·na·bom·ber /'ju:nəˌbɒmər ǁ-ˌbɑː-/ the name given in newspapers etc to a man who, over a period of 18 years, sent 16 bombs through the mail to US universities and other organizations, in order to protest against TECHNOLOGY. In 1996 the FBI arrested Theodore Kaczynski, a former university PROFESSOR, for these crimes, and in 1998 he was sent to prison for life.
un·a·bridged /ˌʌnəbrɪdʒd/ adj (especially of something written, a speech etc) given in its full form; not shortened: complete and unabridged
un·ac·cept·a·ble /ˌʌnəkˈseptəbəl/ adj not good enough to be accepted or approved: unacceptable behaviour | Mass unemployment is the unacceptable face of (=something bad which comes with) modern technology. | Violent crime has reached an unacceptable level.
un·ac·com·pa·nied /ˌʌnəˈkʌmpənid/ adj 1 [(by)] without someone or something else going too: Children unaccompanied by an adult/Unaccompanied children will not be admitted. 2 without music as ACCOMPANIMENT: an unaccompanied song
un·ac·count·a·ble /ˌʌnəˈkaʊntəbəl/ adj fml very surprising; not easily explained: His disappearance was quite unaccountable. → compare ACCOUNTABLE; see also ACCOUNT FOR
—bly adv: He was unaccountably delayed.
un·ac·count·ed for adj not explained, found, or understood: Five men are still unaccounted for after yesterday's mining accident. | an unaccounted for change in the weather
un·ac·cus·tomed /ˌʌnəˈkʌstəmd/ adj 1 [A] not usual: his unaccustomed silence 2 [F+to] not used to (something). People who are making a speech sometimes begin, as a joke, with the words 'Unaccustomed as I am to public speaking ...'
un·a·dopt·ed /ˌʌnəˈdɒptɪd ǁ-ˈdɑːp-/ adj BrE (of a road surface) not to be repaired by the town council, but the responsibility of those who live on the road
un·a·dul·te·rat·ed /ˌʌnəˈdʌltəreɪtɪd/ adj 1 (especially of food) not mixed with impure or less pure substances 2 [A] complete; UTTER: unadulterated nonsense
un·ad·vised /ˌʌnədˈvaɪzd/ adj fml not sensible; done without thinking or taking advice: an unadvised haste —ly /ˌʌnədˈvaɪzɪdli/ adv
un·af·fect·ed /ˌʌnəˈfektɪd/ adj 1 [(by)] not affected (AFFECT1): People in the south of the country were unaffected by the drought. 2 apprec natural in behaviour or character: the unaffected delight of a child —ly adv
un·aid·ed /ˌʌnˈeɪdɪd/ adv without help: It was the first time she had walked unaided since the accident.
un·al·loyed /ˌʌnəˈlɔɪd/ adj especially lit not mixed, especially with unpleasant feelings: unalloyed happiness
un·am·big·u·ous /ˌʌnæmˈbɪɡjuəs/ adj clear; that cannot be misunderstood: unambiguous remarks
un-A·mer·i·can adj (especially of political activity and loyalty) unfavourable or opposed to the US; thought to be against American customs and ways: He was accused of un-American activities. → see also HUAC
u·na·nim·i·ty /ju:nəˈnɪmɪti/ n [U] fml the state or fact of being unanimous
u·nan·i·mous /ju:'nænɪməs/ adj 1 (of people) all agreeing completely: Politicians from all parties were (completely) unanimous in condemning his action. | [+that] The committee were unanimous that the application should be turned down. 2 (of a decision, statement etc) supported or agreed by everyone: The vote for the motion was unanimous. | He was elected Club President by a unanimous decision. —ly adv
un·an·nounced /ˌʌnəˈnaʊnst/ adj having given no sign of arriving or being present; appearing unexpectedly: He burst into the doctor's room quite unannounced and started shouting at her.
un·an·swer·a·ble /ʌnˈɑːnsərəbəlǁʌnˈæn-/ adj 1 which cannot be argued against or opposed, especially (of a charge) because clearly true or right: an unanswerable case in law 2 (of a question) having no answer
un·an·swered /ʌnˈɑːnsədǁ-ˈænsərd/ adj 1 an unanswered question has not been answered: Many other questions remain unanswered. 2 an unanswered letter, telephone call, or request for help has not been replied to: The children's cries for help went unanswered.
un·ap·pe·tiz·ing /ʌnˈæpɪtaɪzɪŋ/ adj (of food) not looking or smelling good: an unappetizing smell/meal | (fig) a rather unappetizing project/prospect
un·ap·proach·a·ble /ˌʌnəˈprəʊtʃəbəl/ adj (of a person) hard to talk to; not seeming to encourage friendliness: a cold, aloof, unapproachable man
un·armed /ˌʌnˈɑːmd ǁ-ˈɑːr-/ adj not carrying a weapon
,unarmed 'combat n [U] fighting without weapons: The Royal Marines are as skilled in unarmed combat as they are in weapon-handling.
un·asked /ʌnˈɑːsktǁ-ˈæskt/ adv without being asked: I love it when he does the washing-up unasked.
un·as·sum·ing /ˌʌnəˈsjuːmɪŋ ǌ -ˈsuː-ǁ-ˈsuː-/ adj apprec not showing a wish to be noticed or given special treatment; modest: the champion's unassuming manner —ly adv
un·at·tached /ˌʌnəˈtætʃt/ adj. 1 not married or ENGAGED 2 [(to)] not connected: unattached buildings
un·at·tend·ed /ˌʌnətendɪd/ adj alone; without people present or in charge: Your car may get damaged here if you leave it unattended. | unattended luggage
un·au·thor·ized /ʌnˈɔːθəraɪzd/ adj without the approval or support of the person, body etc involved: an unauthorized biography
un·a·vail·ing /ˌʌnəˈveɪlɪŋ/ adj especially lit not having any effect; FUTILE: an unavailing attempt to save her
un·a·void·a·ble /ˌʌnəvɔɪdəbəl/ adj that cannot be avoided; impossible to escape: The latest consignment was subject to unavoidable delays. —ably adv: I'm sorry I'm late; I was unavoidably detained.
un·a·ware /ˌʌnəweər/ adj [(of)] not having knowledge or consciousness (of something): He seemed to be unaware of the trouble he was causing. | [+that] He was completely unaware that he was being watched.
un·a·wares /ˌʌnəweəzǁ-ˈwerz/ adv 1 unexpectedly or without warning: I think I must have taken/caught her unawares (=surprised her by my presence) because she looked round guiltily when I called her name. 2 fml or lit unintentionally or without noticing: He dropped it unawares.
un·bal·ance /ˌʌnˈbæləns/ v [T] to make slightly mad: His terrible experience unbalanced him/his mind. | an unbalanced person/character → compare BALANCED
un·bar /ˌʌnˈbɑːr ǀˈv -rr- [T] 1 to remove a locking bar from (a door or gate) 2 fml to make open: These concessions could unbar the way to peace.
un·bear·a·ble /ʌnˈbeərəbəl/ adj too bad or too unpleasant to be accepted; INTOLERABLE: He's unbearable when he's in a bad temper. | unbearable heat | unbearable pain —bly adv: It was an unbearably hot day.
un·beat·a·ble /ʌnˈbiːtəbəl/ adj that cannot be defeated: The White Sox are unbeatable this year.
un·beat·en /ʌnˈbiːtn/ adj not defeated: unbeaten in the last five games
un·be·known · /ˌʌnbɪˈnən/. also un·be·knownst /ˌʌnbɪˈnənst/ adj, adv [(to)] without the stated person knowing: Unbeknown to his parents, he had not been to school for a week.
un·be·lief /ˌʌnbˈliːf/ n [U] fml lack of belief or refusal to believe in matters of religious faith → compare DISBELIEF
un·be·liev·a·ble /ˌʌnbˈliːvəbəl/ adj 1 too improbable to be believed: Her excuse was frankly unbelievable. 2 very surprising: She's got an unbelievable number of cats. | He showed unbelievable stupidity. —bly adv: Her singing voice is unbelievably good.
un·be·liev·er /ˌʌnbˈliːvər/ n a person who has no faith, especially religious faith