- a combining form of most occurring in a series of superlatives: foremost; utmost.
Origin of -most
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- forming the superlative degree of some adjectives and adverbshindmost; uppermost
Old English -mǣst, -mest, originally a superlative suffix, later mistakenly taken as derived from mǣst (adv) most
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for -most
Online Etymology Dictionary, © 2010 Douglas Harper