Out-of-the-way and Sidelong

Out-of-the-way adjective - Different from the ordinary in a way that causes curiosity or suspicion.

Sidelong and out-of-the-way are semantically related In some cases you can use "Sidelong" instead an adjective phrase "Out-of-the-way".

Sidelong adjective - Inclining or directed to one side.

Out-of-the-way and sidelong are semantically related in roundabout topic. Sometimes you can use "Out-of-the-way" instead an adjective "Sidelong".