Ridiculously hot man, dense to put it mildly (3,4,4)
I believe the answer is:
and then some
'put it mildly' is the definition.
Both the definition and answer are adverbs.
Maybe there's a link between them I don't understand?
'ridiculously hot man dense' is the wordplay.
'ridiculously' is an anagram indicator (I've seen this in other clues).
'hot'+'man'+'dense'='hotmandense'
'hotmandense' is an anagram of 'AND THEN SOME'.
'to' is the link.
Can you help me to learn more?
(Another definition for and then some that I've seen is " With plenty more in addition".)