viro

Viro is an adult male specifically; homo is a human being of any sort, and using viro for people in general is a real mistake rather than a stylistic one. Add the feminine suffix -in- and you get virino, a woman: one root, two words, no second vocabulary to learn. Ge- covers a mixed group, so gepatroj are parents and geviroj would be an odd but legal mixed crowd. Vira means male or manly.