The adverb has 3 meanings:
Meaning #1:
in a gradual manner
Derived from adjective: gentle (meaning #7)
Meaning #2:
in a gentle manner
Synonym: mildly
Derived from adjective: gentle (meaning #3)
Meaning #3:
with little weight or force
Synonyms: lightly, softly
Derived from adjective: gentle (meaning #6)




