impermeable
adjectiveNot allowing a substance to pass through.
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Synonym Dictionary
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6 entries matching "resistant" / Letter I / Showing 1-6
Clear all filtersimpervious
adjectiveNot allowing passage through; figuratively, unaffected by an influence.
incorrigible
adjectiveNot readily corrected or reformed; persistently fixed in a habit.
inflexible
adjectiveUnwilling or unable to change or bend.
intractable
adjectiveDifficult to manage, control, or resolve.
intransigent
adjectiveUnwilling to compromise or change a firmly held position.
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