Please go straight on this road.

His opinions are always direct, and that's part of his charm.

He is a very sincere person.

I should do my duty.

Please throw the leftover food in the triangular sink basket in the kitchen.

These vectors are orthogonal.

These lines intersect orthogonally.

We went to London on a direct flight.

He went directly home.

I would be grateful if you could read my work.