Meaning of melancholily in English:
melancholily
Pronunciation /ˈmɛlənkɒlɪli/ /ˈmɛləŋkɒlɪli/
adverb
In a melancholy manner; melancholically.
Origin
Mid 16th century; earliest use found in Thomas Cromwell (d. 1540), royal minister. From melancholy + -ly.