All thumbs

Origin

The phrase "all thumbs" conjures a vivid image of hands transformed, where every finger has been replaced by a large, unwieldy thumb. This immediately conveys a sense of utter clumsiness and a complete lack of fine motor control. While earlier expressions like "all fingers and no thumbs" existed, the more concise and impactful "all thumbs" gained widespread currency and solidified its place in the English lexicon during the 19th century. It quickly became a popular and readily understood idiom, particularly in American English, to describe someone utterly inept at delicate or intricate manual tasks, making even simple actions feel like an insurmountable challenge.