[ sin-sahyn ]
/ ˈsɪn saɪn /
adverb Scot. and North England.
from that time; since then.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for sinsyne
There was never the wale of him sinsyne, and it's a question wi' mony if there ever was his like afore.David Balfour, Second Part|Robert Louis Stevenson
We were all back, changed, and at table by lunch time, 11 A.M. Nor have any of us been the worse for it sinsyne.Vailima Letters|Robert Louis Stevenson