E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Achitophel. (See ABSALOM AND ACHITOPHEL.)
Achitophel was Davids traitorous counsellor, who deserted to Absalom; but his advice being disregarded, he hanged himself (2 Sam. xv.). The Achitophel of Drydens satire was the Earl of Shaftesbury:
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Of these (the rebels) the false Achitophel was first;