IPA: /ˈdʒɒk.ənd.li/
KK: /ˈdʒoʊkəndli/
In a cheerful and lively way.
She danced jocundly at the party, spreading joy to everyone around her.
Jocundly → It is formed from "jocund" (from Latin "jocundus", meaning cheerful or merry) and the suffix "-ly" (meaning in a manner of). The word "jocundly" means in a cheerful or merry manner.
Think of the Latin word for cheerful, 'jocundus', to remember that 'jocundly' means doing something in a cheerful way.