Little knowledge extremely dangerous when most don't work (8)
I believe the answer is:
weekends
'little knowledge extremely dangerous when most don't work' is the definition.
I can't tell whether this defines the answer.
'little knowledge' is the wordplay.
I cannot quite see how this works, but
'little' could be 'wee' (similar in meaning) and 'wee' is present in the answer.
'knowledge' could be 'ken' (ken is a kind of knowledge) and 'ken' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for weekends that I've seen before include "when SATS are" , "Saturdays and Sundays" .)