be on nodding terms

be on nodding terms (with someone)

To know someone only as an acquaintance. The two of us are just on nodding terms—I couldn't even tell you his name. I'm only on nodding terms with her sister, so I can't ask her for a favor like that.
See also: nod, on, term
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

be on nodding terms

know someone slightly.
See also: nod, on, term
Farlex Partner Idioms Dictionary © Farlex 2017
See also: