Vertically level

The answer to the crossword clue “Vertically level is PLUMB” is PLUMB. The word plumb has multiple meanings, one of which is an adjective that refers to something that is completely and precisely vertical or level, like a plumb line used in construction. This term is often used in the building and construction industry to describe the verticality of a structure, such as a wall or a post. Therefore, in the context of the crossword puzzle clue, “Vertically level is PLUMB“, PLUMB refers to the state of being completely vertical or level, which is synonymous with the definition of the word plumb.