Study directions altogether stupid (5)
I believe the answer is:
dense
'altogether stupid' is the definition.
'dense' can be an answer for 'stupid' (similar in meaning). I am not sure about the 'altogether' bit.
'study directions' is the wordplay.
'study' becomes 'den' (term for a study or office).
'directions' becomes 'se' (I've seen this in other clues).
'den'+'se'='DENSE'
Can you help me to learn more?
(Other definitions for dense that I've seen before include "Thick as undergrowth may be" , "Closely compacted" , "Stupid, crowded together" , "Close-packed" , "Thick, compact or crowded" .)