What does the suffix some mean in word burdensome?

The word "burdensome" doesn't actually have a suffix "-some". The suffix in "burdensome" is -some.

-some is a suffix that means "full of" or "characterized by".

In "burdensome", it means "full of burden" or "characterized by burden".

Here are some other words with the "-some" suffix:

* Lonesome: full of loneliness

* Fearsome: full of fear

* Tiresome: full of tiredness

* Troublesome: full of trouble