acme
From Longman Dictionary of Contemporary Englishacmeac‧me /ˈækmi/ noun → the acme of somethingExamples from the Corpusacme• Capitalism specialises in producing useless things, but cigarettes really are the absolute acme of uselessness.• Silence of this quality is the acme of chatter.• These rifts, and the increasingly separate position taken in Nottinghamshire, reached their acme in 1926.Origin acme (1500-1600) Greek akme “point, highest point”