The term 'yellowish grey' can be described as 'DRAB', which is a four-letter word. DRAB is defined as a dull, light grayish-brown color, and is often used to describe something that is uninteresting or unexciting. It is also used to describe a lack of cheerfulness or liveliness. The term 'yellowish grey' is a combination of two colors, yellow and grey, and is usually used to describe a color that is slightly more yellow than grey.