numeracy

The word 'numeracy' is a modern English formation, coined in the mid-20th century by analogy with 'literacy'. Its core root, 'numer-', descends from the Latin numerus, meaning "a number, quantity", which itself can be traced back to the Proto-Indo-European root nem-, meaning "to assign, allot, take". The suffix '-acy', borrowed via Latin from Greek -ateia, denotes a state or condition. Thus, the literal construction "state of being skilled with numbers" was created to fill a lexical gap, providing a direct counterpart to literacy, and formalizes the concept of basic mathematical competence in everyday life.

Structure: numer (number) + acy (state or quality) - numer: From Latin numerus (number). Serves as the core root conveying the concept of number or counting. - acy: A noun-forming suffix of Latin origin (-atia, -acia), indicating a state, condition, or quality.