Inaptitude

Part of speech: noun

Pronunciation: /ɪnˈæpt.ɪ.tud/

Definitions

1. A deficiency in the necessary skills or abilities that affects performance adversely
2. The quality of lacking the required competence or talent to perform effectively
3. A state characterized by insufficient capability or aptitude for a particular task

Etymology: "Inaptitude" is a straightforward formation: the prefix "in-" meaning "not," attached to "aptitude," which comes from the Latin "aptus," meaning "fitted" or "suited." The base idea is of things fitting together, as in a well-made joint, and "aptitude" grew from that sense of suitability into a sense of natural fitness for a task. The noun itself was probably borrowed from French "inaptitude," which in turn most likely derives from a Renaissance Latin form, "inaptitūdō," coined by scholars who needed a word for the lack of a quality that Latin already described with "aptitūdō." The Latin root is therefore the same one behind "aptitude," so the two words are close relatives that entered English along parallel routes.

Synonyms: incompetence, ineptness

Antonyms: aptitude, competence