farthen

From farth(er) +‎ -en.

farthen (third-person singular simple present farthens, present participle farthening, simple past and past participle farthened)

1. (ambitransitive, rare) To make or become farther; increase in distance.
   • 1992, J.C. Maso, Interfaces in Cementitious Composites:

     Covering this zone there is a porous transition zone with a thickness from 10 to 20 micrometers, which becomes more compacted as it farthens from the fibre.

   • 2010, Syed Naqi Husain Jafri, Essays on Literature, History & Society, page 105:

     […] With no fellow traveller except the ever farthening destination
     Having renounced all worldly desires, the heart
     Found itself caught in the charmed circle of that beauty.

See farthing.

farthen (plural farthens)

1. (dialectal) Alternative form of farthing