goopy

the word 'goopy' is a modern english formation, built upon the informal noun 'goop,' which emerged in early 20th-century american english. 'goop' itself is likely an onomatopoeic or expressive creation, imitating the sound or feel of a thick, viscous, and messy substance. by adding the productive adjectival suffix '-y,' of old english origin, the word 'goopy' was created to describe anything characterized by or resembling such a sticky, semi-liquid consistency. its meaning later extended metaphorically to describe overly sentimental or cloying emotional displays, likening them to something unpleasantly sticky or thick.

Structure: goop (a sticky substance) + y (adjective-forming suffix) goop (origin: american english, 20th century, likely imitative or expressive; functional role: root, denoting a viscous, messy substance) + y (origin: old english '-ig'; functional role: suffix forming adjectives meaning "characterized by" or "full of")