Synonyms for Less:

adj.

diminished (adjective)
minus.
less (adjective)
beneath, under, below, lower than.
minus (adjective)
minus.
smaller (adjective)
shorter.
smaller, inferior (adjective)
lower, minor, shortened, lesser, beneath, subordinate, shorter, fewer, minus, not as great, limited, deficient, reduced, diminished, secondary, Declined, depressed.

adv.

all (adverb)
to a lesser extent.

n.

And, let, peak, plus, power, divide/multiply by, IFF. not so... (as), nowhere/not anywhere near, least, the next best/largest/smallest etc.. less (noun)
inferior, lower, fewer, to a lesser extent.
smaller (noun)
reduced, minor, in decline, not as much, shortened, deficient, not as great, secondary, limited, Declined, diminished, circumscribed, shorter, minus, not so significant, subordinate, not so much as, lesser, depressed.

Other synonyms:

IFF. And, let. least. power, peak. Other relevant words:
minus, lesser, Declined, shorter, lower, secondary, And, deficient, not as much, diminished, fewer, plus, not as great, let, subordinate, limited, reduced, to a lesser extent, shortened, IFF, least, inferior, depressed, minor.

Usage examples for less

  1. You couldn't learn many less that's one thing sure. – The Go Ahead Boys on Smugglers' Island by Ross Kay
  2. He had been in London more or less but he had never happened to hear of her. – Alexander's Bridge and The Barrel Organ by Willa Cather and Alfred Noyes
  3. " Less than that," replied Harley Greenoak. – Harley Greenoak's Charge by Bertram Mitford