Dig tunnel badly, revealing some tolerance (9)
I believe the answer is:
indulgent
'dig tunnel badly revealing some tolerance' is the definition.
I can't tell whether this definition defines the answer.
'dig tunnel badly' is the wordplay.
'badly' indicates anagramming the letters (letters in the wrong order).
'dig'+'tunnel'='digtunnel'
'digtunnel' anagrammed gives 'INDULGENT'.
Can you help me to learn more?
(Other definitions for indulgent that I've seen before include "Too tolerant or generous" , "passing over faults" , "Ready to overlook faults" , "Tolerant, lenient" , "ending to spoil" .)