The use of all other processes of nominal derivation and inflection (namely internal modification, suprasegmental processes, subtraction, conversion, suppletion), with the exception of total reduplication, implies the use of affixation.
Standardized
IF there is internal stem modification or suprasegmental modification or subtraction or conversion or suppletion in derivation or inflection, THEN there is affixation.
A familiar claim, most familiar perhaps from Natural Morphology.