unhappy (adj.)experiencing or marked by or causing sadness or sorrow or discontent;
unhappy over her departure
had an unhappy time at school
after the argument they lapsed into an unhappy silence
the unhappy (or sad) news
unhappy (adj.)causing discomfort;
unhappy (adj.)marked by or producing unhappiness; "unhappy caravans, straggling afoot through swamps and canebrakes"- American Guide Series;
unhappy (adj.)generalized feeling of distress;