adjective
almost all :the majority of - usually used before a plural noun
greatest in amount or degree
for the most part
almost all or almost completely
used to describe a condition or situation that usually exists or is true
adverb
in or to the greatest degree
somewhat formal :to a great extent :very
noun
at most
or at the most
not more than a specified amount, level, etc.
make the most of
to use (something) in a way that will get the best result
the most
something of the greatest importance, strength, value, etc.
pronoun
the largest number of people or things
the largest part of something
adverb
US informal :very nearly :almost
usually used with the adjectives all, every, and any; the pronouns all, everyone, everything, everybody, anyone, anything, and anybody; and the adverbs everywhere, anywhere, and always