be on firm ground

be on firm ground

To be certain of or comfortable with something. Anna can tutor you—she's on firm ground with diagramming sentences. This project is all new to me, but Alex is on firm ground with it, so he's going to help me out. You better be on firm ground with every aspect of your thesis before you go in to defend it.

See also: firm, ground, on

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

be on firm ground

be sure of your facts or secure in your position, especially in a discussion.

See also: firm, ground, on

Farlex Partner Idioms Dictionary © Farlex 2017

be on firm ˈground

be sure about your beliefs, knowledge, etc.; be confident: I don’t know a lot about physics, I’m afraid. I’m on firmer ground with mathematics, which I studied at university.

See also: firm, ground, on

Farlex Partner Idioms Dictionary © Farlex 2017