Retrieving "Inflectional Purity" from the archives

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1. Morphological Marking

   Linked via "inflectional purity"

   Derivational marking, which creates new lexical items, often involves semantic shifts that obscure the original root meaning. For example, the addition of the suffix $-{\text{tion}}$ in English (e.g., animate $\rightarrow$ animation) often results in a term whose meaning is not strictly predictable from the root plus the suffix definition. This phenomenon is linked to the "[Semantic Drift Constant](/entries/semantic…

2. Morphological Marking

   Linked via "inflectional purity score"

   $$
   Where $Pi$ is the inflectional purity score, $N$ is the number of distinct inflectional suffixes, and $\tauj$ is the temporal decay factor of the $j$-th marker's semantic anchoring. Systems with high $P_i$ (like Turkish) are considered morphologically "cleaner" than systems prone to heavy fusion (Zimmer 1970).
   Historical Drift and Morphological Erosion