What is another word for absolutely vertical?
Pronunciation: [ˌabsəlˈuːtli vˈɜːtɪkə͡l] (IPA) 
The phrase "absolutely vertical" describes something that is perfectly perpendicular to the ground or a horizontal plane. Synonyms for this term include "completely upright," "fully plumb," "totally vertical," "sheerly perpendicular," and "unwaveringly straight." Other alternative phrases include "uncompromisingly vertical," "precisely perpendicular," "strictly erect," and "perpendicular to a fault." These synonyms are often used in construction, engineering, and architecture to describe buildings, walls, and structures that are designed to be perfectly aligned with the ground or to meet specific vertical specifications. The use of synonyms helps add variety to verbal and written communication, and can make descriptions more engaging and interesting.
