lifeful1
/ˈlʌɪff(ʊ)l/noun
An amount that is, or as many as are, sufficient to fill a lifetime.
Origin
Mid 19th century; earliest use found in Ecclesiastic. From life + -ful.
lifeful2
/ˈlʌɪff(ʊ)l/adjective
Full of life; having much vitality or animation; that gives or bestows life or vitality.
Origin
Middle English; earliest use found in St. Katherine. From life + -ful.