thin up
C1 informal intransitive
In simple words
To become thinner (not a common phrase — most people say 'thin out' or 'slim down' instead).
Literal meaning: To become thinner moving upward.
Meanings
1 C1 informal
(Non-standard, rare) To become slimmer or thinner in body.
"He seemed to have thinned up considerably since the last time we met."
Usage notes
This phrasal verb is not standard and is rarely found in mainstream English usage. Learners are advised to use 'thin out', 'slim down', or 'lose weight' instead. May appear in very informal or dialectal speech.
Forms
Base
thin up
I/you/we/they
3rd person
thins up
he/she/it
Past simple
thined up
yesterday
Past participle
thined up
have + pp
-ing form
thining up
continuous
Understand "thin up" better
Try:
Real video examples
Video examples are being collected. Check back soon.
Want to master this phrasal verb?
Practice "thin up" on Looplines