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WordNet-Online 
 Definitions from WordNet
Adverbial regrettably has 1 sense 
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| Definitions from the WebRegrettablyPart of Speech: Adverb Definitions: 
 Example Sentences: 
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| regressus ad infintum regret regrete regretful regretfully regreting regrets regrettable regrettably regretted regrettfully regretting regretts regroup regrouped regrouping regrow 
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