Synonyms for high

noun

• a high place
• a public secondary school usually including grades 9 through 12
• a forward gear with a gear ratio that gives the greatest vehicle velocity for a given engine speed
• a lofty level or position or degree
• an air mass of higher than normal pressure
• a state of altered consciousness induced by alcohol or narcotics
• a state of sustained elation

adjective

• slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana)
• happy and excited and energetic
• (used of the smell of meat) smelling spoiled or tainted
• used of sounds and voices; high in pitch or frequency
• standing above others in quality or position
• greater than normal in degree or intensity or amount
• (literal meaning) being at or having a relatively great or specific elevation or upward extension (sometimes used in combinations like `knee-high')

adverb

• in a rich manner
• at a great altitude