junior
noun
term of address for a disrespectful and annoying male
“look here, junior, it's none of your business”
a third-year undergraduate
the younger of two persons
“she is two years my junior”
a son who has the same first name as his father
adjective
younger; lower in rank; shorter in length of tenure or service
Oppositesseniorused of the third or next to final year in United States high school or college
“the junior class”
“a third-year student”
including or intended for youthful persons
“a junior sports league”
“junior fashions”
Source: WordNet 3.1, Princeton University