submaximal

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective submaximal is

less than maximal.

As adjectives the difference between less and submaximal

is that less is while submaximal is less than maximal.

As an adverb less

is to smaller extent.

As a preposition less

is minus; not including.

As a verb less

is (obsolete) to make less; to lessen.

As a conjunction less

is (obsolete) unless.