"unholiest" in the adjective sense
1. unholy, unhallowed
not hallowed or consecrated
2. demonic, diabolic, diabolical, fiendish, hellish, infernal, satanic, unholy
extremely evil or cruel expressive of cruelty or befitting hell
"something demonic in him
3. sinful, unholy, wicked
having committed unrighteous acts
"a sinful person"
Source: WordNet® (An amazing lexical database of English)
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