1. in a diagonal direction; at an angle across something

Examples

• She cut the sandwich diagonally to make triangular pieces.
• The path runs diagonally across the park from corner to corner.
• He moved his chess piece diagonally across the board.
• The fabric has stripes running diagonally from left to right.
• Park diagonally in the space to fit better.
• The crack spread diagonally up the wall.