痛いの慣れた！ How is particle の working here?


In response to me talking about how guitar hurts my fingers, a native speaker
replied

> 痛いの慣れた！

Which I believe means "I'm used to the pain"

How can I generalize this grammar of "い adjective + の + verb (in ta form or
other)"

I can't find this on Bunpro or my grammar book, so I'm lost to how it works.




That の is a nominalizer, and a particle is omitted after it.

> ［痛いの］｛は／に／には｝慣れた。




That の is a nominalizer, and a particle is omitted after it.

> ［痛いの］｛は／に／には｝慣れた。

