Impenetrably

[im-pen-i-truh-buh l] /ɪmˈpɛn ɪ trə bəl/

adjective
1.
not penetrable; that cannot be penetrated, pierced, entered, etc.
2.
inaccessible to ideas, influences, etc.
3.
incapable of being understood; inscrutable; unfathomable:
an impenetrable mystery.
4.
Physics. possessing .
/ɪmˈpɛnɪtrəbəl/
adjective
1.
incapable of being pierced through or penetrated: an impenetrable forest
2.
incapable of being understood; incomprehensible: impenetrable jargon
3.
incapable of being seen through: impenetrable gloom
4.
not susceptible to ideas, influence, etc: impenetrable ignorance
5.
(physics) (of a body) incapable of occupying the same space as another body
adj.

mid-15c., from Middle French impenetrable, from Latin impenetrabilis “that cannot be penetrated,” from assimilated form of in- “not, opposite of” (see in- (1)) + penetrabilis “penetrable” (see penetrate). Related: Impenetrably; impenetrability.

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Impenitence
[im-pen-i-tuh nt] /ɪmˈpɛn ɪ tənt/ adjective 1. not feeling regret about one’s sin or sins; obdurate. /ɪmˈpɛnɪtənt/ adjective 1. not sorry or penitent; unrepentant n. 1620s, from Latin impaenitentia, from impaenitens (see impenitent). Impenitency is from 1560s. adj. early 15c., from Latin impaenitentem, from assimilated form of in- “not, opposite of” (see in- (1)) + […]
Impenitent
[im-pen-i-tuh nt] /ɪmˈpɛn ɪ tənt/ adjective 1. not feeling regret about one’s sin or sins; obdurate. /ɪmˈpɛnɪtənt/ adjective 1. not sorry or penitent; unrepentant adj. early 15c., from Latin impaenitentem, from assimilated form of in- “not, opposite of” (see in- (1)) + paenitens (see penitence).
Impenitently
[im-pen-i-tuh nt] /ɪmˈpɛn ɪ tənt/ adjective 1. not feeling regret about one’s sin or sins; obdurate. /ɪmˈpɛnɪtənt/ adjective 1. not sorry or penitent; unrepentant adj. early 15c., from Latin impaenitentem, from assimilated form of in- “not, opposite of” (see in- (1)) + paenitens (see penitence).

Impennate
/ɪmˈpɛneɪt/ adjective 1. (rare) (of birds) lacking true functional wings or feathers
Imper.
1. . 1. imperative 2. imperatively