A Dictionary of the Older Scottish Tongue (up to 1700)
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First published 2001 (DOST Vol. IX).
This entry has not been updated since then but may contain minor corrections and revisions.
Sidious, adj. [? Aphetic form of e.m.E. insidiouse (1545).] Insidious, deceitful, underhand. —1577 Crail B. Ct. 25 June.
To puneis the said Thomas Kynneir for his wykit sklanderows and sidious reporte
