1
lustily
1
mightily
1
powerfully
1
staunchly
1
unbeatably(adverb, invulnerably)
1
watertightly
0
defensively
0
durably
0
fearlessly
0
hardly
0
impassively
0
impracticably
0
indifferently
0
inextricably
0
intolerantly
0
obtusely
0
rigidly
0
safely
0
stolidly
0
unaffectedly
11 years ago|1.3k views|share |citing 
APASmart Define. (2015). imperviously thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/imperviously/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperviously thesaurus" https://smartdefine.org/imperviously/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, imperviously thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/imperviously/thesaurus/synonyms>.
MLASmart Define. "imperviously thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/imperviously/thesaurus/synonyms>