IPA: /ˈmæstərfəli/
KK: /ˈmæstərfəli/
In a way that shows great skill or expertise; done with confidence and competence.
She played the piano masterfully, captivating everyone in the audience.
Masterfully → It is formed from "master" (from Old French *maistre*, meaning one who has control or authority) and "-fully" (meaning in a manner full of). The word "masterfully" means in a manner that demonstrates mastery or skill.
Think of someone who shows great skill or control ('master') and does so 'in a manner full of' ('-fully'). This helps you remember that 'masterfully' means doing something with great skill.