Indescribably

[in-di-skrahy-buh-buh l] /ˌɪn dɪˈskraɪ bə bəl/

adjective
1.
not describable; too extraordinary for description:
a scene of indescribable confusion; indescribable euphoria.
/ˌɪndɪˈskraɪbəbəl/
adjective
1.
beyond description; too intense, extreme, etc, for words
adj.

1794, from in- (1) “not, opposite of” + describable (see describe). Related: Indescribably; indescribability. In same sense, Old English had unasecgendlic.

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Indescript
adjective not described adj. “undescribed,” 1854, from in- (1) “not, opposite of” + Latin descriptus, past participle of describere (see describe).
Indestructibility
[in-di-struhk-tuh-buh l] /ˌɪn dɪˈstrʌk tə bəl/ adjective 1. not destructible; that cannot be destroyed. /ˌɪndɪˈstrʌktəbəl/ adjective 1. incapable of being destroyed; very durable n. 1670s, see indestructible + -ity. adj. early 15c., from in- (1) “not, opposite of” + destructible. Related: Indestructibly.
Indestructible
[in-di-struhk-tuh-buh l] /ˌɪn dɪˈstrʌk tə bəl/ adjective 1. not destructible; that cannot be destroyed. /ˌɪndɪˈstrʌktəbəl/ adjective 1. incapable of being destroyed; very durable adj. early 15c., from in- (1) “not, opposite of” + destructible. Related: Indestructibly.

Indeterminable
[in-di-tur-muh-nuh-buh l] /ˌɪn dɪˈtɜr mə nə bəl/ adjective 1. not determinable; incapable of being ascertained. 2. incapable of being decided or settled. /ˌɪndɪˈtɜːmɪnəbəl/ adjective 1. incapable of being ascertained 2. incapable of being settled adj. late 15c., from Late Latin indeterminabilis “that cannot be defined,” from in- “not” (see in- (1)) + determinabilis, from determinare […]
Indeterminacy
[in-di-tur-muh-nuh-see] /ˌɪn dɪˈtɜr mə nə si/ noun 1. the condition or quality of being ; indetermination. n. 1640s, see indeterminate + -acy.