"worser" in the adjective sense
comparative of `bad') inferior to another in quality or condition or desirability
"this road is worse than the first one we took"
"the road is in worse shape than it was"
"she was accused of worse things than cheating and lying"
2. worse, worsened
changed for the worse in health or fitness
"I feel worse today"
"her cold is worse"
Source: WordNet® (An amazing lexical database of English)
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