Ripe (6)
'ripe' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for mellow that I've seen before include "Grown gentle or mild" , "Of wines, well matured and smooth" , "Ripened by experience etc" , "Ripe, soft" , "Laid-back or pleasantly smooth" .)
'ripe' is the definition.
(I know that ripe can be written as mature)
This is all the clue.
(Other definitions for mature that I've seen before include "reach the end of term" , "Fully grown and developed (6)" , "Ripe or fully grown" , "Old film star" , "Fully developed physically" .)
(Other definitions for rank that I've seen before include "Noisome" , "Relative status" , "Row; foul" , "Very smelly - position" , "sort" .)