Synonyms for bubble

verb

• flow in an irregular current with a bubbling noise
• expel gas from the stomach
• cause to form bubbles
• form, produce, or emit bubbles
• rise in bubbles or as if in bubbles

noun

• a speculative scheme that depends on unstable factors that the planner cannot control
• a dome-shaped covering made of transparent glass or plastic
• a hollow globule of gas (e.g., air or carbon dioxide)
• an impracticable and illusory idea