also STURBEL, STURBYL
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aphetic variant of disturble (vb.) to disturb, trouble (obs.)
1303 - Handlyng Synne, Robert Manning of Brunne;
see Example below
From: Roberd of Brunne's Handlyng Synne
(Written A.D. 1303)
W. the French Treatise on which it is Founded,
Le Manuel des Pechiez by William of Wadington.
Edited by Frederick J. Furnivall, 1862
The Tale of the Minstrel who was Killed for Disturbing a Bishop.