Being more impulsive, pass on when visiting heath (7)
I believe the answer is:
moodier
'being more impulsive' is the definition.
Both the answer and definition are comparative adjectives. Maybe there's an association between them I don't understand?
'pass on when visiting heath' is the wordplay.
'pass on' becomes 'die' (pass on can mean to die).
'when visiting' indicates putting letters inside.
'heath' becomes 'moor' (both can mean a type of landscape).
'die' inserted into 'moor' is 'MOODIER'.
Can you help me to learn more?
(Other definitions for moodier that I've seen before include "More sullen" , "more gloomy" .)