Synonyms for Impenetrable

Synonyms starting with letter D

• dense

  characteristic, impassable, impervious
• dark

  incomprehensible, non-transparent
• deep
• difficult

  complex
• Delphic

  incomprehensible
• 

  dull
• deadpan
• dim
• disconcerting
• defensible
• dreary
• dismal
• dusky
• dry
• disturbing
• discursive
• disordered
• Daedalean
• doubtful
• 

  dirty
• dingy
• drab
• dusk
• darkened
• dun
• disdainful
• discriminative
• determined
• difficult to understand
• deaf to
• durable
• drawn-out
• deep-seated
• distant
• downreaching
• DEp
• disregarded
• desolate
• Daedalian
• darkling