"horridest" in the adjective sense
1. horrid
exceedingly bad
"when she was bad she was horrid"
2. hideous, horrid, horrific, outrageous
grossly offensive to decency or morality causing horror
"subjected to outrageous cruelty"
"a hideous pattern of injustice"
"horrific conditions in the mining industry"
Source: WordNet® (An amazing lexical database of English)
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