crackerjackadjective
/ˈkræk.ə.dʒæk//-ɚ-/US informal excellent, of the highest standard:
He has a reputation as a crackerjack operations executive.
a terrific film with a crackerjack cast
crackerjacknoun [ C ]
/kræk.əˈdʒæk//-ɚ-/US informal old-fashioned something or someone excellent:
a crackerjack of a novel