what is so called?

[hitesh70]

I don't understand where to use so called..

sometime it feels completely unnecessary to use so called...

Does that mean something?

Does it express some kind of feeling?

[emsr2d2]

I don't understand where to use "so called".

Sometimes it feels completely unnecessary to use "so called".

Sometimes it is completely unnecessary and adds little to a sentence. Sometimes it's more important. Context, as usual, is vital.

These so-called actors are just waiters who have an interest in amateur dramatics = These people who refer to themselves (or are sometimes referred to as actors) are simply waiters who want to be actors.

The so-called superbugs have killed thousands of people in the last few years = The bugs which are commonly known as superbugs have killed thousands of people in the last few years.