Synonyms for Highest:

adj.

extreme (adjective)
extreme, maximal.
summit (adjective)
peak, acme, pinnacle, apex, loftiest, zenith, summit, Headmost, extreme, uppermost, tip, Capping, topmost, maximum, crowning, Culminating, top.
tiptop (adjective)
tiptop.
top (adjective)
greatest, foremost, best, maximum, uppermost, loftiest, top, superior, most.
topmost (adjective)
head, uppermost, apical, chief, preeminent, maximum, tiptop, paramount, zenithal, maximal, superlative, principal, most, crown, top, capital, best, supreme, top-notch.

n.

high, upmost. over, top-drawer. highest (noun)
maximum, maximal, peak, ultimate.
topmost (noun)
capital, tiptop, top-notch, apical, chief, zenithal, principal, Overmost, head, crown, superlative, supreme, preeminent, paramount.

Other synonyms:

principal, upmost. top-drawer. supreme
superlative.
topmost
tiptop.
Other relevant words:
high, head, crown, tiptop, apical, maximal, preeminent, top-drawer, superlative, over, supreme, paramount, chief, zenithal, ultimate, Overmost, upmost, principal, top-notch, capital.

Usage examples for highest

  1. " And at first sight in the highest degree mysterious," he said gravely. – The Hunt Ball Mystery by Magnay, William
  2. When she had reached the highest terrace, and dared to look back, she found that the men were still in the street, and were no longer looking at her. – Invisible Links by Selma Lagerlof
  3. The streets were full of volunteers, marching about, all in the highest spirits. – The Red Hand of Ulster by George A. Birmingham