moronic

the word 'moronic' is a modern english formation built upon the noun 'moron'. the term 'moron' itself was coined in the early 20th century from the greek word 'mōros', meaning 'foolish' or 'dull'. the suffix '-ic', of latin and greek origin, is a productive adjectival suffix meaning 'of the nature of' or 'characterized by'. therefore, the literal construction 'moron-ic' yields the meaning 'characteristic of a moron', which has evolved into its current abstract sense of denoting extreme foolishness or stupidity.

Structure: moron (a very stupid person) + ic (adjective-forming suffix) moron (from greek mōron, neuter of mōros 'foolish, dull'); ic (from latin -icus, greek -ikos, forming adjectives meaning 'of, pertaining to, or characteristic of')