Obligation - Crossword Clue, Answer and Explanation

'obligation' is the definition.
(I know that obligation can be written as duty)

This is the entire clue.

(Other definitions for duty that I've seen before include "Levy - tax on imports" , "Service - tax - office" , "Not subject to customs tax" , "A tax; compulsory task" , "assignment" .)

I've seen this clue in The Telegraph, The Sun, The Mirror, The Independent, The New York Times, the USA Today, the Sydney Morning Herald, the LA Times, The Guardian, The Washington Post, the Universal, the Penny Press, The Star Tribune, the Evening Standard, the King Feature Syndicate and the Newsday.

'obligation' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for need that I've seen before include "Rely on" , "''A friend in .... is a friend indeed''" , "Want - require(ment)" , "Shortage" , "state of distress" .)

I've seen this clue in The Telegraph, The Sun, The Mirror, The Independent, The New York Times, the USA Today, the Sydney Morning Herald, the LA Times, The Guardian, The Washington Post, the Universal, the Penny Press, The Star Tribune, the Evening Standard, the King Feature Syndicate and the Newsday.

'obligation' is the definition.
(I know that debt is a type of obligation)

This is the entire clue.

(Other definitions for debt that I've seen before include "Money owed or due" , "Something owed" , "Arrears, liability" , "What's due" , "outstanding" .)

I've seen this clue in The Telegraph, The Sun, The Mirror, The Independent, The New York Times, the USA Today, the Sydney Morning Herald, the LA Times, The Guardian, The Washington Post, the Universal, the Penny Press, The Star Tribune, the Evening Standard, the King Feature Syndicate and the Newsday.

Obligation (4)