over-differentiated
/ˌəʊvədɪfəˈrɛnʃɪeɪtɪd/adjective
Unnecessarily or excessively differentiated; applied (Linguistics ) to an element in a phonemic, graphemic, or grammatical system, or its analysis.
Origin
1920s; earliest use found in Proceedings of the Royal Society of London. From over- + differentiated Compare slightly earlier over-differentiation.