travail

PIE word *tréyes ] From Middle English travail, from Old French travail (“suffering, torment”), deverbal of travailler, from Vulgar Latin tripāliāre, from Late Latin tripālium, from Latin tripālis (“held up by three stakes”) from Proto-Italic trēs + pākslos from Proto-Indo-European peh₂ǵ-. Doublet of travel and travois.

From Middle English travailen, from Old French travaillier, from the noun (see above). Doublet of travel. Displaced native Middle English swinken (“to work”) (from Old English swincan (“to labour, to toil, to work at”)).