Synonyms|119Antonyms|43|Broader|3Narrower|0Related|375
5
impenetrable(adjective, clear, open, dense, incomprehensible)
5
impervious(adjective, responsive, unable, watertight, enigmatical)
3
airtight(adjective, watertight, sealed, enigmatical)
3
dense
2
all-conquering
2
impassable
2
impermeable
2
invulnerable
2
thick
1
compact
1
watertight(adjective, enigmatical)
0
Delphic(adjective, watertight, enigmatical)
0
bulletproof(adjective, watertight, enigmatical)
0
close
0
closed to(expression, adjective, watertight, enigmatical)
0
dim
0
dull
0
enigmatical(adjective, watertight)
0
expectant
0
fleshy
<123>
For more, visit Penetrable on Power Thesaurus
11 years ago|366 views|share |citing 
APASmart Define. (2015). penetrable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/penetrable/thesaurus/antonyms
ChicagoSmart Define. 2015. "penetrable thesaurus" https://smartdefine.org/penetrable/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, penetrable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/penetrable/thesaurus/antonyms>.
MLASmart Define. "penetrable thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/penetrable/thesaurus/antonyms>