I owe you a favor for helping me move last weekend.
a good deed
Frequency:
70
%
He did me a good deed by fixing my car without me even asking.
a kindness
Frequency:
65
%
She showed me a kindness by offering to drive me to the airport.
a solid
Frequency:
50
%
Thanks for doing me a solid and covering my shift at work.
Idiomatic Expressions for do someone a solid
Phrase: do a solid for someone
Meaning: To help someone out or do them a favor
Usage: She did a solid for me by lending me money when I was in a tight spot.