When do we use fault, error, blunder?

[Xander]

English Synonym, Elementary Level

ESL/EFL Test #72 "Synonyms for mistake and error", question 3

Don't blame yourself, it's not your .........!

(a) fault
(b) error
(c) slip
(d) misunderstanding

English Synonym, Elementary Level

ESL/EFL Test #72 "Synonyms for mistake and error", answer 3

Don't blame yourself, it's not your fault!

Correct answer: (a) fault

Your answer was: correct
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when do we use fault, error, blunder

Xander

[Conchita]

'It's (not) your fault' is practically a fixed expression. Here, 'fault' has the meaning of 'responsibility for wrongdoing'. Another way of saying this could be: 'you're not responsible (for what happened)'.

'Error' is used in the sense of 'mistake': typing error.

A 'blunder' is a big mistake, often stupidly careless.