undermost

• POS: Adjective, Adverb
• HYPHEN: un=der=most

CIDE DICTIONARY

undermost, a. [From Under; cf. Aftermost.].

 Lowest, as in place, rank, or condition.  Addison.  [1913 Webster]

ROGET THESAURUS

undermost

Base

N base, basement, plinth, dado, wainscot, baseboard, mopboard, bedrock, hardpan, foundation, substructure, substratum, ground, earth, pavement, floor, paving, flag, carped, ground floor, deck, footing, ground work, basis, hold, bilge, bottom, nadir, foot, sole, toe, hoof, keel, root, centerboard, bottom, undermost, nethermost, fundamental, founded on, based on, grounded on, built on.