early 14c., "afflicted with sorrow," from woe + -ful. Weakened sense of "very bad" recorded by 1610s. Related: Woefully; woefulness.
Entries linking to woeful
woe n.
late 12c., from the interjection, Old English wa!, a common exclamation of lament in many languages (compare Latin væ, Greek oa, German weh, Lettish wai, Old Irish fe, Welsh gwae, Armenian vay).
-ful
word-forming element attached to nouns (and in modern English to verb stems) and meaning "full of, having, characterized by," also "amount or volume contained" (handful, bellyful); from Old English -full, -ful, which is full (adj.) become a suffix by being coalesced with a preceding noun, but originally a separate word. Cognate with German -voll, Old Norse -fullr, Danish -fuld. Most English -ful adjectives at one time or another had both passive ("full of x") and active ("causing x; full of occasion for x") senses.
It is rare in Old English and Middle English, where full was much more commonly attached at the head of a word (for example Old English fulbrecan "to violate," fulslean "to kill outright," fulripod "mature;" Middle English had ful-comen "attain (a state), realize (a truth)," ful-lasting "durability," ful-thriven "complete, perfect," etc.).