have a passing acquaintance with (someone or something)
To have only a limited amount of knowledge of or familiarity with a given person or thing. I'll help you as best I can, but I only have a passing acquaintance with property law. I have a passing acquaintance with him, but I wouldn't feel comfortable asking him to help me on this project. I'll help you as best I can, but I only have a passing acquaintance with property laws.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.