late 14c., "front;" variant of further (adj.). From 1510s as "additional;" 1560s as "more remote."
farther (adv.)
15c. alteration of Middle English ferther (c. 1300), a variant of further (adv.). There is no historical basis for the notion that farther is of physical distance and further of degree or quality.
雙語例句
1. Both of my sisters moved even farther away from home.
我的兩個姐姐都搬得離家更遠了。
來自柯林斯例句
2. I can't see any farther than the next six months.
6個月以后的事情我就無法預見了。
來自柯林斯例句
3. She set her glass down and slid farther under the covers.
她放下杯子，鉆進被子里。
來自柯林斯例句
4. Staff who have to travel farther can claim excess travel expenses.