Sad aliens, sadly, talked through their noses (9)

I believe the answer is:
nasalised
'talked through their noses' is the definition.
I can't judge whether this defines the answer.
'sad aliens sadly' is the wordplay.
'sadly' is an anagram indicator.
'sad'+'aliens'='sadaliens'
'sadaliens' with letters rearranged gives 'NASALISED'.
Can you help me to learn more?
(Other definitions for nasalised that I've seen before include "Used nose to utter" , "For speech, snitch used" .)
