In Latin, terms with the prefix in- occur in numerous asyndetic patterns, some of them of considerable age and stylistic interest. I am mainly concerned with adjectival pairs of which both members have the privative prefix in-, but will deal with other patterns as well to demonstrate the range of types. Material from Greek (showing terms with alpha-privative prefixes) will be cited, and reference will be made too to the Iguvine tablets and to the Rigveda. Presumably the type was inherited as distinct from developing independently in different languages. Prefixes other than in-/alpha-privative are also not infrequently repeated in asyndetic sequences (see further below, 7), but it is the type with negative prefix that is most distinctive.