froth up
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To become frothy; to rise with a frothy surface or covered with something resembling froth.
Where it’s used:
Used
American English
Examples
The Spirit mourn'd "Adieu!"—dissolv’d, and left / The atom darkness in a slow turmoil; / As when of healthful midnight sleep bereft, / Thinking on rugged hours and fruitless toil, / We put our eyes into a pillowy cleft, / And see the spangly gloom froth up and boil: / It made sad Isabella’s eyelids
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “froth up” mean?
To become frothy; to rise with a frothy surface or covered with something resembling froth.
Is “froth up” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.