fat up
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Synonym of fatten up (to cause to gain weight by means of feeding)
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 “fat up” mean?
Synonym of fatten up (to cause to gain weight by means of feeding)
Is “fat up” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.