An emotion often felt in sudden and random bursts of sadness about nothing. It's a mysterious emotion felt often in teenagers and adults. It's trigger is unknown, but can leave the person feeling down. When feeling saderious you may find more reasons to be sad which can lead to depression. Feeling saderious is controllable to a point and very difficult to contain.
As I was watching the movie a saderious feeling ran through me and then I just wanted to go home and cry.

My friend asked me what was wrong and I said I didn't know because I truly did not.
by angelic_wreck December 20, 2016
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The physical personification of sadness and depression, but in a sarcastic or lighthearted manner.
Katie dropped her chicken nuggets, that's such sadery.
by Soccer Dad David November 25, 2018
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