Characterized by or full of gurgling sounds; making soft, bubbling noises; resembling the sound of water flowing through a narrow space.
From 'gurgle' plus the adjectival suffix '-y,' a productive way to create adjectives meaning 'full of' or 'characterized by' (as in 'bubbly,' 'wiggly,' 'giggly').
Gurgly is the kind of informal adjective that children invent naturally—it follows the predictable pattern of adding '-y' to verbs—which is why it feels both very common and somewhat whimsical.
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