pinnacle /pinˈə-kl/

1. A slender turret or spiry structure in architecture
2. A high pointed rock or mountain like a spire
3. The highest point

1. To be the pinnacle of
2. To set on a pinnacle
3. To raise as a pinnacle
4. To provide with pinnacles

pinnˈacled adjective

• operative
• operatively
• operativeness
• operativenesses
• operatives
• operative words
• operator
• operators
• opercula
• opercular
• operculate
• operculated
• operculum
• opere citato
• operetta
• operettas
• operettist
• operettists
• operon
• operons
• operose
• operosely
• operoseness
• operosenesses
• operosities