Past tense of bubble; to have produced or risen in bubbles, or to have moved with a bubbling sound.
From Middle English 'bobel' or 'bubble', possibly imitating the sound (onomatopoeia). The '-ed' suffix marks past tense.
Bubble is one of English's great onomatopoetic words—the sounds of 'b-b-bubble' actually mimic the fizzing and popping sounds bubbles make!
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