- 2Signification: illegibleimpenetrable unreadable unclearobscure unintelligible undecipherable
- 3Signification: unexplainableincomprehensible inexplicable mysterious strangeunintelligible impenetrable inscrutable unaccountable
- 4Signification: stateclosed sealed impermeableimpenetrable airtight tight
- 5Signification: propertysolid compact firm resistantimpenetrable secure impregnable strong
- 6Signification: characteristicimpervious firm impenetrableinvulnerable steadfast proof
- 7Signification: imperviousfirm impenetrable proof steadfast invulnerable
- 8Signification: unfathomableinexplicable obscure incomprehensible inscrutableinviolable unintelligible impenetrable
- 9Signification: densehard close condensed solidcompressed tight impenetrable compact
- 10Signification: non-transparentobscure cloudy impenetrable darkfilmy murky blurred opaque