IPA: /ˈmæskjʊlɪnli/
KK: /mæsˈkjulɪnli/
In a way that is typical of men or masculinity.
He spoke masculinely, showing confidence and strength.
Masculinely → It is formed from "masculine" (from Latin "masculinus", meaning male or manly) and the suffix "-ly" (meaning in a manner of). The word "masculinely" means in a manner that is characteristic of or appropriate to men.
Think of 'masculine' which refers to qualities of being male, and remember that 'masculinely' describes actions or behaviors done in a male-like manner.