knotty adjective (COMPLICATED)
› informal (of a problem or difficulty) complicated and difficult to solve:
It was a very knotty problem.
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(Definición de knotty del Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
(Definición de knotty del Cambridge Academic Content Dictionary © Cambridge University Press)
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Palabra del día
likeable
A likeable person is pleasant and easy to like.