'mechanically-challenged' originates from the English word 'mechanical,' which comes from the Latin word 'mechanicus,' meaning 'pertaining to machines,' and 'challenged,' which is a euphemistic way to describe a lack of ability.

The term 'mechanically-challenged' evolved in modern English as a humorous or polite way to describe someone who struggles with mechanical tasks.

Initially, 'mechanical' referred to anything related to machines, but combined with 'challenged,' it evolved to describe a lack of mechanical skill.