Most  —adj. 1 greatest in quantity or degree. 2 the majority of (most people think so). —n. 1 greatest quantity or number (this is the most i can do). 2 the majority (most of them are missing). —adv. 1 in the highest degree. 2 forming the superlative of adjectives and adverbs, esp. Those of more than one syllable (most absurd; most easily). 3 us colloq. Almost.  at most no more or better than (this is at most a makeshift). At the most 1 as the greatest amount. 2 not more than. For the most part 1 mainly. 2 usually.