Oppressively burdensome Crossword Clue

 The answer to the crossword clue "Oppressively burdensome" is ONEROUS.

This is a 7-letter word that means difficult or troublesome to bear. It is often used to describe a task or responsibility that is too much for someone to handle.

The word "onerous" is derived from the Latin word "onerosus", which means "burdensome".

Here are some other words that can be used to complete the crossword clue:

BURDENSOME

DIFFICULT

TROUBLESOME

OVERWHELMING

TAXING

I hope this helps!