person of no account | = P = | pessimizing compiler

pessimal /pes'im-l/ adj.

[Latin-based antonym for `optimal'] Maximally bad. "This is a pessimal situation." Also `pessimize' vt. To make as bad as possible. These words are the obvious Latin-based antonyms for `optimal' and `optimize', but for some reason they do not appear in most English dictionaries, although `pessimize' is listed in the OED.

person of no account | = P = | pessimizing compiler