Old English geostror; related to Old High German gestaron, Gothic gistra, Old Norse ī gǣr
yester- in British English
prefix
1.
indicating the day before today
yesterday
2.
indicating a period of time before the present one
yesteryear
Word origin
Old English geostran; compare German gestern, Latin hesternus of yesterday
yester in American English
(ˈjɛstər)
adverb
1.
of yesterday
2.
previous to this
▶ USAGE: Usually in combination [yestereve, yesteryear]
Word origin
< yesterday
yester- in American English
prefix
a combining form, now unproductive, occurring in words that denote an extent of time one period prior to the present period, the nature of the period being specified by the second element of the compound
yesterweek
Word origin
[ME; OE geostran, giestron; c. D gisteren, G gestern; akin to L hesternus of yesterday]