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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.]
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"


Emitting a murmuring sound felt to resemble a laugh:
References in classic literature ?
demanded Heyward, examining, with a more curious eye, the secluded dell, with its bubbling fountain, surrounded, as it was, by earth of a deep, dingy brown.
It was pleasant in the summer forenoons -- when the fervent heat, that almost liquefied the rest of the human family, merely communicated a genial warmth to their half torpid systems -- it was pleasant to hear them chatting in the back entry, a row of them all tipped against the wall, as usual; while the frozen witticisms of past generations were thawed out, and came bubbling with laughter from their lips.
Inserting this pole into the bucket, Tashtego downward guides the bucket into the Tun, till it entirely disappears; then giving the word to the seamen at the whip, up comes the bucket again, all bubbling like a dairy-maid's pail of new milk.
Jurgis stood where the balcony of the theater would have been, and opposite, by the stage, he saw three giant caldrons, big enough for all the devils of hell to brew their broth in, full of something white and blinding, bubbling and splashing, roaring as if volcanoes were blowing through it--one had to shout to be heard in the place.
Think of a man's swinging dumbbells for his health, when those springs are bubbling up in far-off pastures unsought by him!
The shades were up, and there was a roaring fire in the stove; the teakettle was singing and bubbling as it sent out a cloud of steam, and pushed over its capacious nose was a half sheet of note paper with "Compliments of Rebecca" scrawled on it.
Sometimes I think I am in Northumberland, and that the noises I hear round me are the bubbling of a little brook which runs through Deepden, near our house;--then, when it comes to my turn to reply, I have to be awakened; and having heard nothing of what was read for listening to the visionary brook, I have no answer ready.
And now two smaller Cratchits, boy and girl, came tearing in, screaming that outside the baker's they had smelt the e the baker's they had smelt the goose, and known it for their own; and basking in luxurious thoughts of sage and onion, these young Cratchits danced about the table, and exalted Master Peter Cratchit to the skies, while he (not proud, although his collars nearly choked him) blew the fire, until the slow potatoes bubbling up, knocked loudly at the saucepan-lid to be let out and peeled.
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.
The pitch was bubbling in the seams; the nasty stench of the place turned me sick; if ever a man smelt fever and dysentery, it was in that abominable anchorage.
A lantern, standing on the ground, showed a bubbling well.
Little Vixen, my fox terrier, went out through the other side; and then there was a roaring and a grunting and bubbling, and I saw the tent cave in, as the pole snapped, and begin to dance about like a mad ghost.