"unhappier" in the adjective sense
1. unhappy
experiencing or marked by or causing sadness or sorrow or discontent
"unhappy over her departure"
"unhappy with her raise"
"after the argument they lapsed into an unhappy silence"
"had an unhappy time at school"
"the unhappy (or sad) news"
"he looks so sad"
2. dysphoric, distressed, unhappy
generalized feeling of distress
3. unhappy
causing discomfort
"the unhappy truth"
4. infelicitous, unhappy
marked by or producing unhappiness
"infelicitous circumstances"
"unhappy caravans, straggling afoot through swamps and canebrakes"- American Guide Series
Source: WordNet® (An amazing lexical database of English)
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