Past Tense of “burst”
The past tense of burst is burst; the past participle is burst.
Why “burst” behaves this way
"Burst" descends from Old English "berstan," a strong verb whose modern zero-change conjugation is the result of centuries of leveling that eventually collapsed its once more elaborate ablaut pattern down to a single unchanging shape, similar to what happened to "let" and "hold." Unlike "hurt" or "cut," whose zero-change form comes from never needing an "-ed" ending in the first place, "burst" actually did have distinct historical forms that later merged together.
This kind of after-the-fact leveling, where a verb that once had genuinely different simple-past and participle forms gradually collapses into a single unchanging shape, is rarer than the phonetic-redundancy pattern behind "cut" or "hurt," making "burst" a genuinely distinct case study even among English's small set of zero-change verbs.
The common confusion
All three forms being identical leaves little room for a conjugation slip; the mix-up that does occur is "burst" versus the unrelated "bursted," a nonstandard regularization that shows up occasionally in casual speech and early learner writing but is not accepted in any standard dialect of English.
How it's actually used
"Burst" appears in a large number of vivid emotional idioms — "burst into tears," "burst into laughter," "burst with pride" — all describing a sudden, uncontainable emotional release, a figurative pattern extending the literal sense of something suddenly rupturing under pressure. "Burst onto the scene" describes a person or trend achieving sudden, striking prominence, a common phrase in entertainment and business journalism describing rapid, attention-grabbing success. Economics uses "burst" technically to describe a speculative bubble collapsing suddenly ("the housing bubble burst"), a precise financial metaphor extending the literal sense of something rupturing under internal pressure. "Burst pipe" is such a common household emergency term that plumbers and insurance adjusters use it as standard technical shorthand, distinct from any more general or figurative sense of the verb.
Across the tense system
"Burst" describing an emotional outburst almost always pairs with "into" plus a noun ("burst into song," "burst into applause"), a fixed grammatical pattern distinct from the more general intransitive use describing a physical object rupturing ("the pipe burst"). "Burst forth," a more literary phrasing, describes something suddenly and dramatically emerging, common in descriptions of nature (flowers bursting forth in spring) as well as sudden emotional expression.
Common real mistakes
The most frequent error is "bursted" as a mistaken regular past tense, a nonstandard form that occasionally appears in casual writing and early learner English but is not accepted in any standard variety. A separate, purely idiomatic confusion is mixing up "burst into" (a sudden emotional or physical entrance) with "burst out" (a sudden vocal outburst, as in "burst out laughing"), two closely related but not fully interchangeable constructions. A further subtlety: "in short bursts" describes an intermittent, stop-and-start pattern of activity (working in short bursts, rain falling in bursts), a noun use of "burst" distinct from any conjugated form of the verb itself. A final note: "burst at the seams" describes something overfull or overcrowded, whether literally (a stuffed suitcase) or figuratively (a schedule bursting at the seams), extending the physical image of fabric splitting under strain. A separate, less common error is inserting "out" unnecessarily after "burst" in sentences where it adds nothing ("the balloon burst out" instead of simply "the balloon burst"), since "burst out" specifically implies a vocal or emotional expression, not a physical rupture.
Examples
- The pipe burst during the coldest night of the year.
- They have burst into laughter at the same joke twice now.
- She burst through the door, out of breath.
- We had burst the balloon by accident before the party even started.
- The dam bursts under too much pressure.
- He burst into tears without warning.
- The seams are bursting on this old couch.
- Her heart burst with pride watching her daughter graduate.
Memory trick
Group "burst" with "let" and "cut" as verbs whose form never changes at all, and remember that unlike "hurt" or "put," whose zero-change pattern comes from phonetic redundancy, "burst" actually merged two once-distinct historical forms into one over time.