heartful1
/ˈhɑːtfʊl/noun
As much as the heart can hold or contain; as much as a person wants or can endure.
Origin
Late 16th century. From heart + -ful.
heartful2
/ˈhɑːtf(ʊ)l/adjective
Characterized by deep emotion or sincerity of expression; genuine, sincere, heartfelt. Of an emotion: deeply or acutely felt; intense.
Origin
Late Middle English; earliest use found in Robert Mannyng (d. c1338), poet and historian. From heart + -ful.