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All answers having "Burst" as clue:

3 Character Answers:

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POP



4 Character Answers:

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POSY

REND

RENT

TEEM



5 Character Answers:

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ERUPT

LANCE

SALVO

SPASM

SPLIT

SPURT



6 Character Answers:

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BLEWUP

LAWFUL

POPPED



7 Character Answers:

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EXPLODE

POPOPEN

RUPTURE

SHATTER



8 Character Answers:

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RUPTURED



9 Character Answers:

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MILLINERY



12 Character Answers:

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WATERINGHOLE