Free and easy
Definition 1 of 2

Informal Usage
Used in casual conversations more than in formal writing or speeches.

When he's off duty, his free and easy way of speaking changes.
Positive Vibe
Conveys a positive feeling about someone's behavior or environment.

The picnic had a free and easy vibe, with everyone enjoying themselves.
Personal Quality
May describe an admirable quality in someone's personality.

Despite the pressure, the captain maintained a free and easy demeanor.
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