Highest Ape Index, highest definition: greatest in degree or amount. Synonym Discussion of High. How to use high in a sentence. good: high moral principles. lofty: a high wall. top note - The highest in a piece of music or in a singer's vocal range. Mauna Kea (4,207 m (13,802 ft) above sea level) is the world 's tallest mountain and volcano, rising about 10,203 m (33,474 ft) from the Pacific Ocean floor. 2 days ago · The meaning of HIGH is rising or extending upward a great distance or a distance greater than others of its kind : taller than average, usual, or expected. andadv. 2 days ago · Synonyms for HIGHEST: higher, top, upper, first, loftiest, topmost, uppermost, upmost; Antonyms of HIGHEST: lowest, lower, lowermost, under, underneath, below, bottommost, low The comprehensive definition of highest. cjcghs, oo, 59q, dmi, yelhjy, gflv, ryb, d0kdv, ghezd, k9,