Mild, tender (6)
I believe the answer is:
gentle
This clue is a double definition.
'mild' is the first definition.
(similar in meaning)
'tender' is the second definition.
(similar in meaning)
(Other definitions for gentle that I've seen before include "Mild and benign" , "'Do not go . . . . . . into that good night' (Dylan Thomas)" , "Kind, not rough" , "that may help angler catch fish" , "Kind, not harsh" .)