be on firm ground
(redirected from are 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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be on firm ground
be sure of your facts or secure in your position, especially in a discussion.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.Farlex Partner Idioms Dictionary © Farlex 2017