The noun 'impediment' is derived from the Latin word 'impedimentum,' which is formed from 'impedire,' the same root as the verb 'impede.' 'Impedire' combines 'in,' meaning 'in' or 'into,' and 'pes,' meaning 'foot,' giving the original sense of something that 'gets in the way of the feet' or 'hinders forward movement.' In this context, 'impediment' etymologically signifies something that obstructs or hinders progress or achievement. Over time, it has come to represent any obstacle, difficulty ... Definition of impediment noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Something that is an impediment to a person or thing makes their movement, development, or progress difficult. IMPEDIMENT definition: 1. something that makes it difficult or impossible for someone or something to move or make…. Learn more.