Englishpanache
noun
they played with panache and authority:
flamboyant confidence, flamboyance, confidence, self-assurance, style, stylishness, flair, elan, dash, flourish, verve, zest, spirit, brio, éclat, vivacity, vigour, gusto, animation, liveliness, vitality, enthusiasm, energy;
informal pizzazz, oomph, zip, zing.
panache Oxford Dictionary of English