Synonyms for Boys:

n.

•men (noun)
fellows, Gentlemen, Males, Chaps, bucks, manhoods, guys, men, gents, hombres.
•youngsters (noun)
girls, sprouts, innocents, Children, lads, kids, Newborns, sprigs, Babies, toddlers, minors, slips, juveniles, lasses, saplings, Infants, urchins, striplings, waifs, youngsters, fledglings.

Usage examples for boys

1. Have you heard from any of the boys with the cattle? – The Desert of Wheat by Zane Grey

2. There were four of them left at home- three boys and a girl. – Hyacinth 1906 by George A. Birmingham

3. I tell you what, boys – The Auto Boys' Vacation by James A. Braden