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impenetrable
impenitent
imperative
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Also available:
World English Dictionary
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impermeable
im·per·me·a·ble
[
im púrmee əb'l
]
adjective
Definition:
not permitting passage through:
not permitting the passage of liquid, gas, or other fluid.
See also
impervious
im·per·me·a·bil·i·ty
[
im pùrmee ə bíllətee
]
noun
im·per·me·a·ble·ness
[
im púrmee əb'lnəss
]
noun
im·per·me·a·bly
[
im púrmee ə blee
]
adverb
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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im·per·me·a·bil·i·ty [ im pùrmee ə bíllətee ] nounim·per·me·a·ble·ness [ im púrmee əb'lnəss ] nounim·per·me·a·bly [ im púrmee ə blee ] adverb
