crack (adjective) crack: super, first-rate
Sinonime: action, ardor, bounce, brio, briskness, buoyancy, dash, dynamism, ebullience,
elation, energy, enthusiasm, esprit,
excitement,
exhilaration,
fervor,
gaiety, high spirits, life, oomph,
passion, pep, sparkle, spirit, sprightliness, verve, vibrancy, vigor, vim,
vitality, vivacity, zap,
zeal, zest, zing, zip, élan
Antonime: discouragement, dullness, inactivity