The biggest exam, everybody will enter for (7)
I believe the answer is:
tallest
'the biggest' is the definition.
I can't tell whether this defines the answer.
'exam everybody will enter for' is the wordplay.
I cannot really understand how this works, but
'everybody' could be 'all' (all people) and 'all' is located in the answer.
'exam' could be 'test' (synonyms) and 'test' is found within the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for tallest that I've seen before include "Top out" , "most exaggerated" , "Most lofty" , "Of greatest height" , "Most high" .)