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thus spectrum feat tyrant den

thus

thus W1 /ðʌs/ adverb formal

  1. [sentence adverb] as a result of something that you have just mentioned
    1. Most of the evidence was destroyed in the fire. Thus it would be almost impossible prove him guilty
  2. in this manner or way
    1. They diluted the drug, thus reducing its effectiveness
  3. thus far until now
    1. Her political career thus far had remained unblemished.

spectrum

spec·trum /ˈspektrəm/ noun (plural spectra /-trə/) [countable]

  1. a complete range of opinions, people, situations etc, going from one extreme to its opposite
    1. spectrum of
      1. the ethnic spectrum of America
    2. across the spectrum
      1. The bill drew support from across the political spectrum
    3. broad/wide/full etc spectrum
      1. a broad spectrum of environmental groups
      2. The two articles here represent opposite ends of the spectrum
  2. the set of bands of coloured light into which a beam of light separates when it is passed through a prism
  3. a complete range of radio, sound etc waves
    1. the electromagnetic spectrum

feat

feat /fiːt/ noun [countable]

something that is an impressive achievement, because it needs a lot of skills, strength etc to do

  • remarkable/considerable/incredible etc feat
    • They climbed the mountain in 28 days, a remarkable feat
  • feat of
    • an incredible feat of engineering
  • perform/accomplish/achieve a feat
    • the woman who performed the feat of sailing around the world alone
  • no mean feat (=something that is difficult to do)
    • It is no mean feat to perform such a difficult piece

tyrant

ty·rant /ˈtaɪərənt $ ˈtaɪr-/ noun [countable]

  1. a ruler who has complete power and uses it in a cruel and unfair way
    1. The country had long been ruled by tyrants
  2. someone who has power over other people, and uses it cruelly or unfairly
    1. My headmaster was a real tyrant

den

den /den/ noun [countable]

  1. the home of some animals, for example lions or foxes
  2. a place where secret or illegal activities take place
    1. corrupt gambling dens
    2. a den of thieves
  3. an enclosed and secret place where children play
  4. especially American English a room in a house where people relax, watch television etc
  5. British English old-fashioned a small room in a house where people can work, read etc without being interrupted
    1. Father retreated to his den
  6. den of iniquity a place where activities that you think are immoral or evil happen - often used humorously
    1. Her mother was convinced that London was a den of iniquity.

Reference

  • Longman Dictionary of Contemporary English