"a softly spoken man"
I was slightly confused this day when I read the term "A softly spoken man". Is it a typo or a careless mistake, or is it a term whose grammar construction simply has to be learned?
I can imagine
a softly speaking man,
a soft voice,
a soft behavior or
a soft being (man, woman, pet) ...
Please help me to understand. Maybe it is an idiom? Thank you for your effort.