perpendicular

adjective3

1. •
   At or forming a right angle (to something).

   • In most houses, the walls are perpendicular to the floor.
2. •
   Exactly upright; extending in a straight line toward the centre of the earth, etc.
3. •
   Independent of or irrelevant to each other; orthogonal.

   • Hey, I'm not unsabotaging anything! This is completely perpendicular sabotage! — 2019

noun3

1. •
   A line or plane that is perpendicular to another.
2. •
   A device such as a plumb line that is used in making or marking a perpendicular line.
3. •
   (slang, no longer used) A meal eaten at a tavern bar while standing up.

adjective1

1. •
   Of a style of English Gothic architecture from the fourteenth and fifteenth centuries, marked by stiff and rectilinear lines, mostly vertical window-tracery, depressed or four-centre arch, fan-tracery vaulting, and panelled walls.