2 N‑COUNT Undesirables are people who a particular government considers to be dangerous or a threat to society, and therefore wants to get rid of. □ Police were on hand to prevent undesirables from entering.
un|de|tect|ed /ʌ nd I te kt I d/ ADJ [ADJ after v, ADJ n, v-link ADJ ] If you are undetected or if you do something undetected , people do not find out where you are or what you are doing. □ …the spy ring had a fifth member as yet still undetected. □ They managed to get away from the coast undetected. □ …an undetected cancer.
un|de|vel|oped /ʌ nd I ve ləpt/
1 ADJ [usu ADJ n] An undeveloped country or region does not have modern industries and usually has a low standard of living. □ The big losers will be the undeveloped countries.
2 ADJ Undeveloped land has not been built on or used for activities such as mining and farming. □ Vast tracts of the country are wild and undeveloped. □ …the world's largest undeveloped gold deposit outside of South Africa.
un|did /ʌ nd I d/ Undid is the past tense of undo .
un|dies /ʌ ndiz/ N‑PLURAL [oft poss N ] You can refer to a woman's or girl's underwear as their undies . [INFORMAL ]
un|dig|ni|fied /ʌnd I gn I fa I d/ ADJ If you describe someone's actions as undignified , you mean they are foolish or embarrassing. □ It is sad to see a county confine its activities to undignified public bickering. □ All this public outpouring is so undignified.
un|di|lut|ed /ʌ nda I luː t I d/
1 ADJ [usu ADJ n] If you describe someone's feelings or characteristics as undiluted , you are emphasizing that they are very strong and not mixed with any other feeling or quality. □ I will look back at this one with undiluted pleasure. □ Her Irish accent, after thirty-odd years in London, is undiluted.
2 ADJ A liquid that is undiluted has not been made weak by mixing it with water.
un|dis|ci|plined /ʌ nd I s I pl I nd/ ADJ If you describe someone as undisciplined , you mean that they behave badly or in a disorganized way. □ …a noisy and undisciplined group of students. □ Teachers often view youth workers as undisciplined and ineffectual.
un|dis|closed /ʌnd I skloʊ zd/ ADJ [usu ADJ n] Undisclosed information is not revealed to the public. □ The company has been sold for an undisclosed amount.
un|dis|cov|ered /ʌ nd I skʌ və r d/ ADJ Something that is undiscovered has not been discovered or noticed. □ Some of the islands in the western Pacific Ocean are an undiscovered gem. □ This site remained undiscovered, though long sought, until recent times.
un|dis|guised /ʌ nd I sga I zd/ ADJ [usu ADJ n] If you describe someone's feelings as undisguised , you mean that they show them openly and do not make any attempt to hide them. □ Hean looked down at Bauer in undisguised disgust. □ By mid-season the hostility between the two was undisguised.
un|dis|mayed /ʌ nd I sme I d/ ADJ [v-link ADJ ] If you say that someone is undismayed by something unpleasant or unexpected, you mean that they do not feel any fear, worry, or sadness about it. [FORMAL ] □ [+ by ] He was undismayed by the prospect of failure.
un|dis|put|ed /ʌ nd I spjuː t I d/
1 ADJ If you describe a fact or opinion as undisputed , you are trying to persuade someone that it is generally accepted as true or correct. □ …the undisputed fact that he had broken the law. □ …his undisputed genius.
2 ADJ If you describe someone as the undisputed leader or champion, you mean that everyone accepts their position as leader or champion. □ At 78 years of age, he's still undisputed leader of his country. □ …after 10 years of undisputed power.
un|dis|tin|guished /ʌ nd I st I ŋgw I ʃt/ ADJ If you describe someone or something as undistinguished , you mean they are not attractive, interesting, or successful. □ …his short and undistinguished career as an art student.
un|dis|turbed /ʌ nd I stɜː r bd/
1 ADJ [v-link ADJ , ADJ after v, ADJ n] Something that remains undisturbed is not touched, moved, or used by anyone. □ The desk looked undisturbed. □ Peonies react badly to being moved and are best left undisturbed.
2 ADJ [v-link ADJ , ADJ after v, ADJ n] A place that is undisturbed is peaceful and has not been affected by changes that have happened in other places. □ In the Balearics, pockets of rural life and inland villages are undisturbed. □ The war had not left Bargate undisturbed.
3 ADJ [ADJ after v, ADJ n, v-link ADJ ] If you are undisturbed in something that you are doing, you are able to continue doing it and are not affected by something that is happening. □ I can spend the whole day undisturbed at the warehouse. □ There was a small restaurant on Sullivan Street where we could talk undisturbed. □ They want undisturbed rest.
4 ADJ If someone is undisturbed by something, it does not affect, bother, or upset them. □ [+ by ] Victoria was strangely undisturbed by this symptom.
un|di|vid|ed /ʌ nd I va I d I d/
1 ADJ [usu ADJ n] If you give someone or something your undivided attention, you concentrate on them fully and do not think about anything else. □ Eldest children are the only ones to have experienced the undivided attention of their parents. □ …any task that requires undivided concentration.
2 ADJ [usu ADJ n] Undivided feelings are ones that are very strong and not mixed with other feelings. □ The paintings she produced in those months won undivided admiration. □ He has my undivided loyalty.