Cryptic crossword clue
Responsibility of old student group 4

The most common and most likely answer to this crossword clue is the 4 letter word ONUS

O
N
U
S


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The straight part
We know that "Responsibility" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case responsibility = onus.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does ONUS mean?

ONUS noun
  1. A legal obligation.
  2. Burden of proof, onus probandi
  3. Stigma.
  4. Blame.
  5. Responsibility; burden.

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