A personality or manner that is bold, frank, and unaffected; straightforward and generous (commonly used as a na-adjective).
彼は豪放な性格で、細かいことをあまり気にしない。
He has a largehearted nature and doesn't worry much about small things.
その俳優は舞台で豪放な演技を見せ、観客を魅了した。
The actor gave a bold, forceful performance on stage and captivated the audience.
酒席では豪放に振る舞う先輩が多い。
There are many seniors who behave boisterously at drinking parties.