2 ADJ If you describe something as unsteady , you mean that it is not regular or stable, but unreliable or unpredictable. □ His voice was unsteady and only just audible.
3 ADJ [usu ADJ n] Unsteady objects are not held, fixed, or balanced securely. □ …a slightly unsteady item of furniture.
un|stick /ʌnst I k/ (unsticks , unsticking , unstuck )
1 VERB If you unstick something or if it unsticks , it becomes separated from the thing that it was stuck to. □ [V n] Mike shook his head, to unstick his hair from his sweating forehead. □ [V ] The stewards' badges do not unstick from a car and therefore cannot be passed around.
2 → see also unstuck
un|stint|ing /ʌnst I nt I ŋ/ ADJ [usu ADJ n] Unstinting help, care, or praise is great in amount or degree and is given generously. □ The task was made easier by the unstinting help extended to me.
un|stop|pable /ʌnstɒ pəb ə l/ ADJ Something that is unstoppable cannot be prevented from continuing or developing. □ The progress of science is unstoppable. □ …the country's seemingly unstoppable economy.
un|stressed /ʌ nstre st/ ADJ If a word or syllable is unstressed , it is pronounced without emphasis. [TECHNICAL ] □ …the unstressed syllable of words like 'above', 'surround' or 'arrive'.
un|struc|tured /ʌ nstrʌ ktʃə r d/ ADJ Something such as a meeting, interview, or activity that is unstructured is not organized in a complete or detailed way. □ Our aim was that these meetings be unstructured and informal.
un|stuck /ʌnstʌ k/
1 PHRASE If something comes unstuck , it becomes separated from the thing that it was attached to. □ The brown vinyl covering all the horizontal surfaces is coming unstuck in several places.
2 PHRASE To come unstuck means to fail. [mainly BRIT , INFORMAL ] □ Economics comes unstuck when it doesn't take account of the actions of human beings. in AM, usually use come unglued 3 → see also unstick
un|sub|scribe /ʌ nsəbskra I b/ (unsubscribes , unsubscribing , unsubscribed ) VERB If you unsubscribe from an online service, you send a message saying that you no longer wish to receive that service. [COMPUTING ] □ [V ] Go to the website today and you can unsubscribe online.
un|sub|stan|ti|at|ed /ʌ nsəbstæ nʃie I t I d/ ADJ A claim, accusation, or story that is unsubstantiated has not been proved to be valid or true. □ I do object to their claim, which I find totally unsubstantiated. □ …unsubstantiated rumours about his private life.
un|suc|cess|ful /ʌ nsəkse sfʊl/
1 ADJ Something that is unsuccessful does not achieve what it was intended to achieve. □ His efforts were unsuccessful. □ …a second unsuccessful operation on his knee. □ There were reports last month of unsuccessful negotiations between guerrillas and commanders. ● un|suc|cess|ful|ly ADV [ADV with v] □ He has been trying unsuccessfully to sell the business in one piece since early last year.
2 ADJ Someone who is unsuccessful does not achieve what they intended to achieve, especially in their career. □ Successful people don't spend much more time working than many unsuccessful people do. □ [+ in ] He and his friend Boris were unsuccessful in getting a job.
un|suit|able /ʌ nsuː təb ə l/ ADJ Someone or something that is unsuitable for a particular purpose or situation does not have the right qualities for it. □ [+ for ] Amy's shoes were unsuitable for walking any distance.
un|suit|ed /ʌ nsuː t I d/
1 ADJ If someone or something is unsuited to a particular job, situation, or place, they do not have the right qualities or characteristics for it. □ [+ to ] He's totally unsuited to the job. □ [+ to ] The snow cruiser proved hopelessly unsuited to Antarctic conditions.
2 ADJ If two people, especially a man and a woman, are unsuited to each other, they have different personalities or interests, and so are unlikely to have a successful relationship. □ [+ to ] By the end of that first year, I knew how totally unsuited we were to each other.
un|sul|lied /ʌ nsʌ lid/ ADJ If something is unsullied , it has not been spoiled or made less pure by the addition of something unpleasant or unacceptable. [LITERARY ] □ She had the combined talents of toughness, intellect, experience and unsullied reputation. □ [+ by ] He smiled, unsullied by doubt.
un|sung /ʌ nsʌ ŋ/ ADJ Unsung is used to describe people, things, or places that are not appreciated or praised, although you think they deserve to be. [WRITTEN ] □ They are among the unsung heroes of our time.
un|sup|port|ed /ʌ nsəpɔː r t I d/
1 ADJ If a statement or theory is unsupported , there is no evidence which proves that it is true or correct. □ [+ by ] It was a theory unsupported by evidence. □ The letters contained unsupported allegations.
2 ADJ [usu ADJ n] An unsupported person does not have anyone to provide them with money and the things they need. □ Unsupported mothers are one of the fastest-growing groups of welfare claimants.
3 ADJ [usu ADJ n] An unsupported building or person is not being physically supported or held up by anything. □ …the vast unsupported wall of the Ajuda Palace in Lisbon. □ …the child's first unsupported step.
un|sure /ʌ nʃʊə r /
1 ADJ [usu v-link ADJ ] If you are unsure of yourself, you lack confidence. □ [+ of ] He made her feel hot, and awkward, and unsure of herself. □ The evening show was terrible, with hesitant unsure performances from all.