What is another word for head room?
Pronunciation: [hˈɛd ɹˈuːm] (IPA) 
Head room refers to the space between a person's head and the ceiling or any overhead obstacle. There are several other phrases that can be used as a synonym for headroom. Ceiling height, clearance, clearance height, head clearance, vertical space, and headspace are some words that describe the amount of space a person has above their head. These synonyms are commonly used in various fields like architecture, construction, aviation, etc., to describe the available vertical space. The appropriate use of these synonyms can aid in better communication and understanding of the required headroom, which is crucial in ensuring safety and comfort.
