noun
free person; free spirit
Refers to someone who lives according to their own values, unbound by social conventions or obligations. Often carries a positive, slightly unconventional nuance.
彼は会社を辞めて、自由人として世界中を旅している。
He quit his job and is traveling the world as a free spirit.
彼女は自由人だから、決まっ
She's a free person, so working fixed hours doesn't suit her.
自由奔放 describes a freewheeling, unrestrained attitude or behavior, often used as an adjective, whereas 自由人 is a noun labeling a person.
Compound of 自由 (freedom) and 人 (person). The exact historical derivation is uncertain, but the term is a straightforward modern coinage.