Where does “never-do-well” come from?

never-do-well (English) comes from English do, from English ditto, from Italian ditto, from Italian detto, from Latin dictus, from Latin dīcō, from Latin -tiō, from Latin dissertātiō — small stone, pebble; gravel, rubble.

Ancestry of “never-do-well”, step by step

never-do-well traces back through 3 separate lines of ancestry.

via English do

StepLanguageWordMeaning
1EnglishdoA syntactic marker
2EnglishdittoThat which was stated before, the aforesaid, the...
3Italianditto
4Italiandettopast participle of dire; past participle of...
5Latindictussaid, uttered; mentioned, spoken, having been...
6Latindīcōto say, talk, speak, utter, mention
7Latin-tiōtion, -ation, -ing
8Latindissertātiō(spoken) dissertation, discourse, disquisition
9Latindissertusarranged, disposed; explained
10Latindissereresecond-person singular future passive indicative...
11Latindis-asunder, apart, in two; reversal, removal;...
12Latincalceusshoe
13Latincalxlimestone; chalk; the finish line
14Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English well

StepLanguageWordMeaning
1EnglishwellAccurately, competently, satisfactorily;...
2Middle Englishwellento boil, to bubble
3Old Englishweallanto well
4Proto-Germanicwallanąto well up, spring out, bubble forth
5Proto-Indo-EuropeanwēlH-to roll, to undulate
6Proto-Indo-EuropeanwelH-to turn, to wind

via English Never

StepLanguageWordMeaning
1EnglishNeverAt no time; on no occasion; in no circumstance
2Middle Englishneverenever
3Old Englishnǣfrenever
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-