More sticky, gluey, or viscous; the comparative form of 'gooey.'
From 'goo' (sticky substance, origin uncertain but possibly from 'glue') plus the comparative suffix '-ier.' The base word 'goo' emerged in colloquial English around the early 1900s.
The word 'goo' is perfect onomatopoeia—it sounds like what it means, the way the 'oo' sound feels thick and sticky in your mouth, just like the substance itself feels sticky in your hands!
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