The definition of horrendous is something really bad, horrible or awful.(adjective)
An extremely bad and unpleasant experience is an example of a horrendous experience.
See horrendous in Webster's New World College Dictionary
Origin: L horrendus < prp. of horrere: see horrid
See horrendous in American Heritage Dictionary 4
Origin: From Latin horrendus
Origin: , from
Origin: gerundive of horrēre, to tremble.
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