'Farther' refers to measurable physical distance; 'further' refers to degree, extent, or progress in a figurative sense.
Comparative of 'far'. Preferred for concrete, measurable physical distances.
The second office is farther from the station than the first.
Can you walk farther, or do you need to rest?
The moon is much farther than it looks from here.
Comparative of 'far'. Used for degree, extent, or non-physical advance. Also a verb meaning to advance or promote.
We need to discuss this further before making a decision.
Further research is required to confirm the findings.
She worked hard to further her career in finance.
Common mistake
Using 'farther' in figurative contexts: "We need to go farther into this topic" (more natural: further). In modern American English, many native speakers use 'further' for both physical and figurative distance.
Trick to remember it
'FARther' contains FAR — use it when you are measuring actual, physical far-ness. 'FURther' has FUR — think of going further into a fur coat (deep, abstract, beyond the surface).
Quick rule
Physical, measurable distance? 'Farther'. Degree, extent, or figurative progress? 'Further'. When in doubt, 'further' works for both in modern English.
Did you know?
The farther/further distinction is one of the most debated in English grammar. The Chicago Manual of Style says both work for physical distance, but only 'further' works for figurative use. In British English, 'further' is used for both physical and figurative contexts far more often than 'farther'.
Exercise 1 · Pick the right one
The new campus is three kilometres _____ from the city centre than the old one.
Exercise 2 · Pick the right one
We need _____ evidence before we can draw any firm conclusions.
Exercise 3 · Form the word
Physical, measurable distance? 'Farther'. Degree, extent, or figurative progress? 'Further'. When in doubt, 'further' works for both in modern English.
Using 'farther' in figurative contexts: "We need to go farther into this topic" (more natural: further). In modern American English, many native speakers use 'further' for both physical and figurative distance.
'FARther' contains FAR — use it when you are measuring actual, physical far-ness. 'FURther' has FUR — think of going further into a fur coat (deep, abstract, beyond the surface).
Bryan López
Founder of SpeakUP Academy