From Longman Dictionary of Contemporary Englishpanachepa‧nache /pəˈnæʃ, pæ-/ noun [uncountable] STYLE/ELEGANCEa way of doing things that makes them seem easy and exciting, and makes other people admire you → stylewith panache They played and sang with great panache.
Examples from the Corpus
panache• Should I scrap upper case and dash ahead with lower-case panache to show myself a proper mistress of the form?• Then, with considerable panache and dignity she held the flaming papers high in her hands until they disappeared in smoke.• Talley Beatty was recruited by Parham as a guest artist to lend the extra panache of a star to the event.• Pappano conducted the symphony with great panache.• She wore her clothes with typical Italian panache.• The performance didn't have the panache you expect from a chart-topping rock band.• For nobody, back at base, can now argue that I am failing to complete the contract with panache and style.• The cannons are played with panache yet with the heart on the sleeve.Origin panache (1500-1600) Old French pennache, from Late Latin pinnaculum “small wing” 