Meaning of Unchallengeable

English: Unchallengeable
Type: Unknown / অজানা / अज्ञात

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Definition: 1

a call or summons to engage in any contest, as of skill, strength, etc.

Definition: 2

something that by its nature or character serves as a call to battle, contest, special effort, etc.: Space exploration offers a challenge to humankind.

Definition: 3

a call to fight, as a battle, a duel, etc.

Definition: 4

a demand to explain, justify, etc.: a challenge to the treasurer to itemize expenditures.

Definition: 5

difficulty in a job or undertaking that is stimulating to one engaged in it.