chief
A 3-letter word that means "which person" is "who."
Who is a person. Man is a person. She is a person.
jerk
villain
bridegroom
Reporter
· outstanding
Reporter
vicious person
Converted
A fifteen letter word that means easy is ultrasimplistic. Ultrasimplistic means easy to understand, deal with or use. It also means an ignorant, foolish or gullible person.