Figure of Speech - The Four Fundamental Operations

The Four Fundamental Operations

The four fundamental operations, or categories of change, governing the formation of all figures of speech are:

• addition (adiectio), also called repetition/expansion/superabundance
• omission (detractio), also called subtraction/abridgement/lack
• transposition (transmutatio), also called transferring
• permutation (immutatio), also called switching/interchange/substitution/transmutation

These four operations were detected by classical rhetoricians, and still serve to encompass the various figures of speech. Originally these were called, in Latin, the four operations of quadripartita ratio. The ancient surviving text mentioning them, although not recognizing them as the four fundamental principles, is the Rhetorica ad Herennium, of unknown authorship, where they are called πλεονασμός (addition), ἔνδεια (omission), μετάθεσις (transposition) and ἐναλλαγή (permutation). Quintillian then mentioned them in Institutio Oratoria. Philo of Alexandria also listed them as addition (πρόσθεσις), subtraction (ἀφαίρεσις), transposition (μετάθεσις), and transmutation (ἀλλοίωσις).