ETYM For sins, contr. from Old Eng. sithens, sithenes, formed by an adverbial ending (cf. Besides) from Old Eng. sithen, also shortened into sithe, sin, as. siththan, syththan, seoththan, afterward, then, since, after.
1. From a definite past time until now.
2. In the time past, counting backward from the present; before this or now; ago.
3. Because; as the result of.
ETYM Old Eng. when, whan, whenne, whanne, AS. hwaenne, hwanne, hwonne; akin to OS. hwan, OD. wan, Old High Germ. wanne, German wann when, wenn if, when, Goth. hwan when, and to Eng. who. Related to Who.
1. At what time; used interrogatively.
2. At what time; at, during, or after the time that; at or just after, the moment that.
3. Which time; then; -- used elliptically as a noun.
ETYM Old Eng. whennes, whens (with adverbial s, properly a genitive ending; -- see -wards), also whenne, whanene, AS. hwanan, hwanon, hwonan, hwanone; akin to Dutch when. Related to When, Hence, Thence.
From what place or origin or source; SYN. wherefrom.