From Middle English therwith, from Old English þǣrwiþ (“therewith, in return, in exchange, against”), equivalent to there + with. Cognate with Danish derved (“therewith”), Swedish därvid (“therewith, thereby”). Parallel with Dutch daarmee, German damit (“therewith”), though etymologically different. See also theremid.
therewith (not comparable)
- With this, that or those.
- ca. 1370: He ȝaue ȝow fyue wittes//For to wershepen hym ther-with - Piers Plowman, ii-16
- I have learned, in whatever state I am, therewith to be content. - Philippians, 4:11
- In addition to that; besides, moreover.
- To speak of strength and therewith hardiness. - Geoffrey Chaucer
- Thereupon, forthwith; with that being said or done.
- 1869: 'I take the privilege, Mistress Ruth, of saluting you.' ...And therewith I bussed her well. - Richard Blackmore, Lorna Doone, 1.
- therewith in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
- The Century Dictionary, The Century Co., New York, 1914