Synonyms|230Antonyms|32|Broader|3Narrower|0Related|172

30 entries under hard topic. ×

0
inelastic(solid, rigid)
0
inflexible(solid, rigid)
0
jelled(solid, rigid)
0
refractory(solid, rigid)
0
rigid(solid, unyielding, unbending, unreceptive)
0
set(solid, rigid)
0
stiff(solid, rigid)
0
sturdy(solid, rigid)
0
tough(solid, rigid)
0
unyielding(solid, rigid, unbending, unreceptive)
<12>
For more, visit Impermeable on Power Thesaurus
11 years ago|4.5k views|share |citing 
APASmart Define. (2015). impermeable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impermeable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impermeable thesaurus" https://smartdefine.org/impermeable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, impermeable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impermeable/thesaurus/synonyms>.
MLASmart Define. "impermeable thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/impermeable/thesaurus/synonyms>