Definition of moanfully in English:
moanfully
adverb ˈməʊnfʊliˈməʊnf(ə)li
rare In a moanful manner; so as to express grief or lamentation. Later also: so as to produce moaning.
Origin
Early 17th century; earliest use found in Mary Wroth (b.?1587), author. From moanful + -ly.