Manly? Rot! Nonsense! Like an elderly woman (8)
I believe the answer is:
matronly
'like an elderly woman' is the definition.
I can't judge whether this defines the answer.
'manly? rot nonsense' is the wordplay.
'nonsense' indicates an anagram.
'manly'+'rot'='manlyrot'
'manlyrot' is an anagram of 'MATRONLY'.
Can you help me to learn more?
(Other definitions for matronly that I've seen before include "Like a dignified or staid woman" , "staid and plumpish" , "like mum!" , "staid and podgy?" , "like some women!" .)