International organisation is very precise, in general (10)
I believe the answer is:
unspecific
'general' is the definition.
(similar in meaning)
'international organisation is very precise' is the wordplay.
I cannot quite see how this works, but
'international' could be 'un' (I've seen this in other clues) and 'un' is found in the answer.
'precise' could be 'specific' (associated in meaning) and 'specific' is located in the answer.
No letters remain.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Another definition for unspecific that I've seen is " Vague".)