Letters that make sweetly
s, e, l, t, w, y are letters that make 'sweetly'
1 possible definitions for 'sweetly'
Under this definition, sweetly is an adjective and has the following properties:
sweet has the same meaning as sweetly
'sweetly' can be a useage of colloquialism.
"Susan Hayward plays the wife sharply and sweetly", "how sweet the moonlight sleeps upon this bank"- Shakespeare, "talking sweet to each other"