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 sprightly: most sprightly.

"The sprightliest is The Banjo, no longer a paean to the instrument as in the Broadway version but now a "dance sensation" - a concept that sets the number up much better and gives the talented, hardworking dance ensemble its best chance to ignite the show. which in stage form remains a second-tier work."

deftest    funnest    what-the-hell    extemporal    thatll    spoiled-brat    fleetest    complimental    slimmest    dragonlike