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Definition of uncrackable

uncrackable

/ˌʌnˈkræk.ə.bəl/
un · crack · a · ble
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uncrackable Lexical Profile

uncrackable Game Scores & Validity

• adjective

1

Impossible to decipher, solve, or breach (especially of a code, password, security system, or mystery).

Example

"The cryptographers designed an encryption algorithm that they believed was completely uncrackable."

2

Unable to be physically broken, split, or fractured.

Example

"The safe was constructed from a dense alloy advertised as virtually uncrackable under extreme pressure."

Synonyms
View all synonyms for uncrackable
Antonyms
View all antonyms for uncrackable

• Rhymes for uncrackable

• Nearby Words

uncouthly
uncover
uncovered
uncrackable
uncracked
uncrate
uncrease

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Uncrackable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/uncrackable
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