defectively

Defectively is an adverb formed from the adjective defective. It denotes performing, functioning, or presenting something in a defective or faulty manner, failing to meet expected standards of quality, safety, or accuracy. The term is used across technical, scientific, manufacturing, and analytic contexts to describe imperfect operation, workmanship, or data.

Usage of defectively generally describes how something fails or is flawed, rather than identifying a specific cause. It can modify actions, devices, or processes, for example: something operating defectively, a defectively designed component, or a defectively executed procedure. In evaluative or investigative writing, defectively often signals issues uncovered through inspection, testing, or audit processes.

Etymology and morphology: Defective derives from Latin defectivus, via Old French defectif, with the suffix -ive forming the adjective. The adverb defectively is produced by adding the standard adverbial suffix -ly to defective. The sense remains close to “in a defective manner,” though the precise shade depends on context.

Usage notes: Defectively tends to appear in formal or technical prose. It usually conveys that performance or quality falls short of a standard, which may imply design, manufacturing, or operational problems. It is not typically used to describe moral fault.

Related terms include defective (adjective), defectiveness (noun), defect (noun), and defectively related phrases such as “operate defectively” or “defectively designed.” Synonyms include inadequately, faultily, improperly; antonyms include correctly, effectively, properly.