Collins COBUILD Advanced Learner’s Dictionary

un|tamed /ʌ nte I md/ ADJ An untamed area or place is in its original or natural state and has not been changed or affected by people. [LITERARY ] □  …the wild, untamed undergrowth. □  The interior of Corsica is high and untamed.

un|tan|gle /ʌ ntæ ŋg ^ə l/ (untangles , untangling , untangled )

1 VERB If you untangle something that is knotted or has become twisted around something, you undo the knots in it or free it. □ [V n] He was found desperately trying to untangle several reels of film. □ [V n] …a light, non-sticky mousse which untangles hair and adds brilliant shine.

2 VERB If you untangle a confused or complicated situation, you make the different things involved clear, or put the situation right. □ [V n] Lawyers and accountants began trying to untangle the complex affairs of the bank.

un|tapped /ʌ ntæ pt/ ADJ [usu ADJ n] An untapped supply or source of something has not yet been used. □  Mongolia, although poor, has considerable untapped resources of oil and minerals.

un|ten|able /ʌ nte nəb ^ə l/ ADJ [usu v-link ADJ ] An argument, theory, or position that is untenable cannot be defended successfully against criticism or attack. □  This argument is untenable from an intellectual, moral and practical standpoint.

un|test|ed /ʌ nte st I d/

1 ADJ If something or someone is untested , they have not yet been tried out or have not yet experienced a particular situation, so you do not know what they will be like. □  The Egyptian Army remained an untested force.

2 ADJ [usu ADJ n] If you describe something such as a drug or chemical as untested , you mean that it has not been subject to scientific tests to find out if it is safe to use. □  …the dangers of giving untested drugs to people.

un|think|able /ʌnθ I ŋkəb ^ə l/

1 ADJ [usu v-link ADJ ] If you say that something is unthinkable , you are emphasizing that it cannot possibly be accepted or imagined as a possibility. [EMPHASIS ] □  Splitting the family in this way was almost unthinkable. ● N‑SING The unthinkable is something that is unthinkable. □  Edward VIII had done the unthinkable and abdicated the throne.

2 ADJ You can use unthinkable to describe a situation, event, or action which is extremely unpleasant to imagine or remember. □  This place is going to be unthinkable without you.

un|think|ing /ʌ nθ I ŋk I ŋ/ ADJ If you say that someone is unthinking , you are critical of them because you consider that they do not think carefully about the effects of their behaviour. [DISAPPROVAL ] □  He doesn't say those silly things that unthinking people say. ●  un|think|ing|ly ADV [usu ADV with v, oft ADV adj] □  They use their own judgment, rather than unthinkingly obeying instructions.

un|ti|dy /ʌnta I di/

1 ADJ If you describe something as untidy , you mean that it is not neat or well arranged. □  The place quickly became untidy. □  …a thin man with untidy hair. □  Clothes were thrown in the luggage in an untidy heap. ●  un|ti|di|ly /ʌnta I d I li/ ADV [usu ADV with v, oft ADV adj] □  Her long hair tumbles untidily around her shoulders. □  …the desk piled untidily with books and half-finished homework. ●  un|ti|di|ness N‑UNCOUNT □  The dust and untidiness in her room no longer bothered her.

2 ADJ If you describe a person as untidy , you mean that they do not care about whether things are neat and well arranged, for example in their house. □  I'm untidy in most ways.

un|tie /ʌ nta I / (unties , untying , untied )