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Things challenge often describes (“challenge ________”)
question, answers, corner, questions, round, problem, online, level, circuit, desafio, number, yourself
How challenge often is described (“________ challenge”)
major, serious, real, new, greatest, direct, biggest, significant, greater, difficult, formidable, important, intellectual, main, particular, legal, fundamental, big, constant, key, considerable, interesting, ultimate, technical, enormous, daunting, unique, primary, constitutional, open, tremendous, additional, critical, radical, immediate, diagnostic, exciting, peremptory, ongoing, successful, huge, severe, soviet, effective, environmental, subsequent, antigenic, global, powerful, japanese, bigger, oral, communist, competitive, substantial, bold, profound, technological, theoretical
Commonly used words are shown in bold. Rare words are dimmed.
Click on a word above to view its definition.
Click on a word above to view its definition.