Downhearted and Lowdown

Downhearted adjective - Feeling unhappiness.

Lowdown and downhearted are semantically related In some cases you can use "Lowdown" instead an adjective "Downhearted".

Lowdown noun - Information not generally available to the public.

Downhearted and lowdown are semantically related in depressed topic. Sometimes you can use "Downhearted" instead an adjective "Lowdown", if it concerns topics such as discouraged.