perjurious

the word 'perjurious' has a direct lineage from latin legal terminology. it is built upon the verb perjurare, which combined the intensifying or negative prefix per- with jurare, meaning "to swear," thus creating the specific sense of swearing an oath with the intent to deceive. the suffix -osus, meaning "full of," was added in latin to form the adjective perjuriosus. entering english via anglo-norman and middle french, the term retained its precise legal connotation, describing not just any lie, but one that corrupts the solemn act of giving testimony under oath. this evolution encapsulates how a compound latin concept was lexicalized into a single english adjective denoting a specific character of falsehood.

Structure: perjur (swear falsely) + ious (adjective suffix) perjur originates from latin perjurare (to swear falsely), from per- (destructively, to ill effect) + jurare (to swear). the suffix -ious is a latin-derived adjectival suffix meaning "full of" or "characterized by."