In a lasting manner, in a way that persists.(adverb)
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Use "lastingly" in a sentence
"So much for a strong and free press: The aura of powerlessness hanging over everyone from Congress to the newsrooms across the nation is palpable and lastingly demoralizing. burritoboy Says:"
"He is wailed on a cross for words said so lastingly late gone."
"The key issue is whether the current bailout will lastingly reduce investors' concerns about debt sustainability in Greece and the euro-zone periphery more generally."