Furthest

• POS: Adjective, Adverb
• HYPHEN: fur=thest

CIDE DICTIONARY

Furthest, a. 

 superl. Most remote; most in advance; farthest. See Further, a.  [1913 Webster]

Furthest, adv. 

 At the greatest distance; farthest.  [1913 Webster]

OXFORD DICTIONARY

Furthest, adj. & adv. (also farthest esp. with ref. to physical distance)
--adj. most distant.
--adv. to or at the greatest distance.

Idiom

at the furthest (or at furthest) at the greatest distance; at the latest; at most.

Etymology

ME, superl. f. FURTHER

THESAURUS

Furthest

at the height, at the limit, extreme, far out, farthermost, farthest, farthest off, furthermost, greatest, most, most distant, outermost, outmost, radical, remotest, too much, ultimate, ultra, ultra-ultra, utmost, uttermost, way out