Downbeat and Long-faced

Downbeat adjective - Emphasizing or expecting the worst.

Long-faced and downbeat are semantically related In some cases you can use "Long-faced" instead an adjective "Downbeat".

Long-faced adjective - Having a face longer than the usual.

Downbeat and long-faced are semantically related in serious topic. Sometimes you can use "Downbeat" instead an adjective phrase "Long-faced", if it concerns topics such as sad, somber.