alumnus (a graduate)

losing one's virginity (of a man)

to lose one's virginity (of a man)

one person / singleness, singularity / one's own efforts or strengths / an unmarried person, single

one person

a person, human / an individual / mankind, people / character, personality / an average person / (law); an adult / someone (else)

a personality / the role of that person

counter for number of people

man

person from that group / person who does the activity of the suffixed word