Word: onus
Phonetic:
/ˈəʊnəs/
Listen:
A legal obligation. Example: The onus is on the landlord to make sure the walls are protected from mildew.
Burden of proof, onus probandi Example: The onus is on those who disagree with my proposal to explain why.
Stigma.
Blame.
Responsibility; burden.
You can find a list of possible crossword clues for ONUS below.