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impenetrable

see definition of impenetrable

More words related to impenetrable

sealed

adjective. secured
  • airtight
  • closed
  • firm
  • fixed
  • impenetrable
  • shut
  • tight

supernatural

adjective. mysterious, not of this world

superphysical

adjective. supernatural

supersensible

adjective. supernatural

thick

adjective. dense (referring to weather)

tight

adjective. sealed

tighter

adjective. sealed

tightest

adjective. sealed

unaccountable

adjective. not explainable; mysterious
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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