Scottish National Dictionary (1700–)
-WITH, suff. Also -wath, woth, wuth. As in Eng., compounded with preps. and advs. denoting direction, motion or extension. See under significant word, as Backwith, doonwith, s.v. Doon, adv.1, III. 42., Hamewith, Inwith, adv., Outwith, Upwith. In Sc. the usage has been extended to common and even proper nouns (see below), prob. partly due to conflation with -warth, -worth, -wirth, s.v. Want, suff.
Ags. 1896 A. Blair Rantin Robin 112:
It took ower the fields, toonwith. Abd. 1955 W. P. Milne Eppie Elrick xv.:
Na, we're fae Buchanwa'th.
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"-with suffix". Dictionary of the Scots Language. 2004. Scottish Language Dictionaries Ltd. Accessed 23 May 2019 <https://www.dsl.ac.uk/entry/snd/with_suffix>
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