Another word for sad but not to much vocabulary?

Here are some words for "sad but not too much" that avoid complex vocabulary:

General:

* Down

* Blue

* Glum

* Disappointed

* A little low

* Slightly unhappy

* A bit down in the dumps

* Not feeling my best

More specific:

* Melancholy (slightly poetic)

* Wistful (thinking about something you miss)

* Nostalgic (missing the past)

The best word will depend on the context and the specific nuance you want to convey.