5 words for DELSSY 1-letter words

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1 letter (5)

d e l s y
Powerful blow
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W
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A
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L
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L
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O
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P
Hint 1 meaning
To boil with a continued bubbling or heaving and rolling, with noise.
Hint 2 anagram
WALPOL
Hint 3 another clue
BATTER ___
4 +1