Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. From un- + moderate, probably after classical Latin immoderātusimmoderate.
Definition of unmoderate in US English:
unmoderate
adjective(ˌ)ʌnˈmɒd(ə)rət
Excessive, unrestrained; = "immoderate".
Origin
Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. From un- + moderate, probably after classical Latin immoderātus immoderate.