Kenneth G. Wilson (1923–). The Columbia Guide to Standard American English. 1993.
inexecrable, execrable, inexorable (adjs.)
Inexecrable is obsolete, if indeed it really ever existed as an English word outside certain copies of Shakespeare’s Merchant of Venice (IV.i.128), where it is probably a misspelling of inexorable. If not, then it may be a hyperbolic nonce word version of execrable, meaning “disgusting, detestable, wretched, cursed.” Inexorable means “not to be moved by words” and hence “relentless,” “inflexible.” She was inexorable, determined to have her way, and not to be made to change her mind.
