heighten up
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To become or alter (something) to make it heightened, higher, more powerful or more intense.
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 “heighten up” mean?
To become or alter (something) to make it heightened, higher, more powerful or more intense.
Is “heighten up” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.