This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. superlative form of crisp: most crisp.

"While most of the senators were at least as verbose as they were at the September confirmation hearings of Chief Justice John G. Roberts Jr., the crispest was the chairman, Mr. Specter, who dispensed with an introduction on Tuesday and was immediately out of the gate with a question about abortion."

two-fingered    cross-arm    eight-horse    open-hand    sorrowfully