mellow out
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To become mellow or to soften in intensity (such as a smell, emotion or sound), or to change from uptight to relaxed.
Register: informal
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “mellow out” mean?
To become mellow or to soften in intensity (such as a smell, emotion or sound), or to change from uptight to relaxed.
Is “mellow out” formal or informal?
mellow out is generally informal.