obtuse russian

• тупо́й

  blunt, dull (not sharp)

  stupid, dull, slow-witted, dumb

  dull (of pain), muffled (of a sound)

  obtuse (angle)

• ограни́ченный

  limited, restricted, finite

  narrow-minded, dull-witted, obtuse

• и́дол

  idol, callous obtuse person

• ту́пость

  stupidity, dullness, obtuseness

  bluntness, dullness