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a. A thin, usually spherical or hemispherical film of liquid filled with air or gas: a soap bubble.
b. A globular body of air or gas formed within a liquid: air bubbles rising to the surface.
c. A pocket formed in a solid by air or gas that is trapped, as during cooling or hardening.
2. The sound made by the forming and bursting of bubbles.
3. Something insubstantial, groundless, or ephemeral, especially a fantastic or impracticable idea or belief: didn't want to burst the new volunteers' bubble.
4. Something light or effervescent: "Macon—though terribly distressed—had to fight down a bubble of laughter" (Anne Tyler).
a. A usually transparent glass or plastic dome.
b. A protective, often isolating envelope or cover: "The Secret Service will talk of tightening protection, but no President wants to live in a bubble" (Anthony Lewis).
a. A usually oval outline, as on a ballot or a standardized test form, intended to be filled in using a pencil or pen.
b. A rounded or irregularly shaped outline, as in a cartoon or other drawing, containing a character's speech or thoughts, as represented by words or pictures.
7. Economics An increase in the price of a commodity, investment, or market that is not warranted by economic fundamentals and is usually caused by ongoing investment or speculation in the expectation that the price will increase further.
intr.v. bub·bled, bub·bling, bub·bles
1. To form or give off bubbles: soup bubbling on the stove.
2. To move or flow with a gurgling sound: a brook bubbling along its course.
a. To rise to the surface: gas bubbled up through the swamp water.
b. To become active or intense enough to come into prominence: "Since then, the revolution has bubbled up again in many forms" (Jonathan Schell).
4. To display irrepressible activity or emotion: The kids were bubbling over with excitement.
Capable of being categorized in one class or another; borderline: coaches evaluating bubble players to see which ones might play at a higher level.
on the bubble
On the brink of a new development or condition, especially in danger of being cut from a sports team: "These are the players on the bubble, the ones who are not sure if they have made the team" (Jason Diamos).

[From Middle English bubelen, to bubble.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.bubbling - emitting or filled with bubbles as from carbonation or fermentation; "bubbling champagne"; "foamy (or frothy) beer"
effervescent - (of a liquid) giving off bubbles
2.bubbling - marked by high spirits or excitement; "his fertile effervescent mind"; "scintillating personality"; "a row of sparkly cheerleaders"
lively - full of life and energy; "a lively discussion"; "lively and attractive parents"; "a lively party"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


Emitting a murmuring sound felt to resemble a laugh:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature ?
The current had turned at right angles, sweeping round along with it the tall schooner and the little dancing coracle; ever quickening, ever bubbling higher, ever muttering louder, it went spinning through the narrows for the open sea.
Here they found a spring of pure bubbling water, around which the grass was full of wild strawberry plants, their pretty red berries ripe and ready to eat.
For an instant, without an exclamation, without a cry for help, Athos tried to sustain himself on the surface of the waters, but the weight dragged him down; he disappeared by degrees; soon nothing was to be seen except his long, floating hair; then both men disappeared and the bubbling of the water, which, in its turn, was soon effaced, alone indicated the spot where these two had sunk.
As if planted on purpose for him, there soon appeared a little tuft of maples, with a delightful recess in the midst, and such a fresh bubbling spring that it seemed never to have sparkled for any wayfarer but David Swan.
So an hour passed away, during which the silence was only broken by the bubbling of the pot and the hissing of the flames.
A mighty fire was blazing on the hearth and roaring up the wide chimney with a cheerful sound, which a large iron cauldron, bubbling and simmering in the heat, lent its pleasant aid to swell.
With hot heart I took the green winding path, and presently came the little grassy glade, and the bubbling crystal well, and the hut of wattled boughs, and, looking through the open door of the hut, I saw a lovely girl lying asleep in her golden hair.