Franner means: It can be used to substitute for a forgotten word or person. It depends on the context. You can often use it to replace swear words. It is also used in negative situations, but it can be useful in some cases. You can use the word in many different ways: Franner noun Franny adjective Franned verb Frann noun Franniest franning verb These synonyms are: strange, person, thing. (in Community Dictionary, added by Ayla Weaver)