The word 'techy' is a modern English formation, emerging in the late 20th century alongside the rise of personal computing and digital culture. Its first element is a direct shortening of 'technology' or 'technical', which itself derives from the Greek 'tekhnē', signifying art, craft, or systematic skill. The adjectival suffix '-y', of native Germanic origin, is appended to indicate the characteristic of being imbued with or inclined toward the root concept. Thus, 'techy' logically builds from the concrete notion of skill ('tekhnē') to describe either a person deeply engaged with technological systems or material that is densely packed with specialized, technical detail.

Structure: tech (technology) + y (adjective suffix) - tech: A modern English clipping of 'technology', ultimately from Greek 'tekhnē' (art, craft, skill). Functions as the core root. - y: A productive English suffix of Old English origin, used to form adjectives meaning 'characterized by' or 'full of'.