More far or distant than something else; the comparative form of 'far' used to measure distance or progress.
From Old English 'feorr' (far) plus the comparative suffix '-er.' This forms 'farther,' and 'fartherer' is a rare double-comparative that's generally considered non-standard English.
English speakers sometimes double-stack comparatives ('more farther,' 'very better') which grammar sticklers hate—but linguists recognize it as natural language evolution, not corruption.
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