It's fine to ignore director and suppress vacuous adaptation - it's nonsensical (5)
I believe the answer is:
inane
'nonsensical' is the definition.
(I've seen this in another clue)
'it's fine to ignore director and suppress vacuous adaptation it's' is the wordplay.
I cannot quite see how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is present in the answer.
The remaining letters 'ian' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for inane that I've seen before include "Foolish, fatuous" , "Annie (anag.)" , "Devoid of intelligence" , "Idiotic" , "Silly, witless" .)