A heartbreaking dream that arouses so much negative emotion that you can't get it out of your head for days.
Holly: "Mommy, I had a sadmare last night."
Mommy: "What was it about?"
Holly: "I can't remember, but I'm still sad."
Mommy: "What was it about?"
Holly: "I can't remember, but I'm still sad."
by Holly Shoes December 04, 2009
Similar to a nightmare, but rather than being it being frightening and leaving you feeling on edge, it is upsetting and leaves the person who experienced it feeling sad.
by cog support bot 800 October 01, 2019