This is the 136th most frequent Hungarian word.
fiatal
"Fiatal" means "young" in English.
Here, 'fiatal' functions as a nominalized adjective, representing 'young people' as a plural generic term.
A csoportban sok fiatal van.
There are many young people in the group.
Here, 'fiatal' as an adjective describes the noun 'ember', meaning 'man', to indicate that he is young.
A fiatal ember a parkban sétált.
The young man was walking in the park.
In this sentence, 'fiatal' is used as an adjective describing the noun 'koromban', which means 'in my age.'