What does this mean??

[scattynuttymare]

Just read an ad for someone wanting a groom on "an ad hoc basis"

What does is mean??

Sorry if I'm being really dumb here!!

 

[Sooty]

It's a way of saying 'as and when'. It literally means 'for the purpose of', but is taken to mean impromptu or erratic. What it means in the context of the ad is irregular work.

 

[scattynuttymare]

Ah right!!

Thanks!!!

The ad doesn't sound quite as appealing now