Livelihood
Old English līflād ‘way of life’, from līf ‘life’ + lād ‘course’ (see lode). The change in the word's form in the 16th century was due to association with lively and -hood.
wiktionary
From Middle English liflode, from Old English līflād(“course of life, conduct”), from līf(“life”) + lād(“course, journey”), later altered under the influence of lively, -hood. Compare life, lode.
etymonline
livelihood (n.)
1610s, alteration of livelode "means of keeping alive" (c. 1300), from Old English liflad "course of life," from lif "life" (see life) + lad "way, course" (see load (n.)). Similar formation in Old High German libleita "provisions." Spelling assimilated to words in -hood. Earlier livelihood was a different word, meaning "liveliness," from lively.
