“It's not easy to reach the apex of anything in life without dedication and perseverance.”
“At first, it appeared as a solitary star resting on the apex of the mountain.”
“His hand glided with blandishing pressure along the keen edge of the green stone, and he placed the ivory apex of the spear lovingly against his cheeks.”
apical
(phonetics) A sound produced by obstructing the air passage with the tip of the tongue.