also des-, dys- -troble, -trowbel, -truble, -trubill, -trybul.
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Middle English from Old French destrobler, -troubler, from des-, Latin dis- + trobler, troubler to trouble.
An etymologically earlier Old French form of the latter was torbler, turbler, tourbler
(:—L. turbulāre), whence the earlier Middle English type desturble, -tourble, disturble.
Trouble had become at an early date the prevalent form of the simple vb., and distrouble gradually superseded disturble, but itself scarcely survived to 1600.
Scottish distrybul, distribulance, etc., were apparently associated with Latin tribulāre to afflict, oppress
From: A One-Text Print of Chaucer's Minor Poems
Edited by Frederick J. Furnivall. 1868-1880
Dethe of Blaunche the Duchesse.