diagonally is a form of:

Diagonal



noun
1.
(A diagonal line, plane, course, part. etc) បន្ទាត់ទ្រេត, វិជ្ឈកោណ
Example: Sau took a diagonal course across the field.
adjective
1.
(slanting, crossing comer to comer, having a slanting direction slanting markings, lines, etc) ដែលបញ្ឆៀង, ដែលដូចបន្ទាត់ទ្រេត (វិជ្ឈកោណ)