Which of these words means "idle spectator"?

The story behind the answer

Gongoozler is the correct answer because it’s British canal slang for someone who idly watches activity on waterways—people who stand by locks or towpaths just to gaze at boats and barges. Think “go and ogle”: a gongoozler goes to look, not to act. The term emerged around the 19th century in canal culture, celebrating (and gently teasing) the curious onlooker.

To lock it in your memory, contrast it with the other quirky words: jentacular relates to breakfast (from Latin jentac