1. resembling a board in appearance, texture, or rigidity; flat and stiff

Examples

• The old canvas had become boardlike and brittle over the decades.
• His boardlike posture made him look uncomfortable in the formal suit.
• The dried mud formed a boardlike crust on the ground.
• She complained that the mattress felt boardlike and offered no comfort.
• The fabric had a boardlike stiffness after being heavily starched.