In the following sentence, four words printed in bold are given. One of these words printed in bold might either be wrongly spelled or inappropriate to the context of the sentence. Find out the word that is inappropriate or wrongly spelled, if any. If the words printed in bold are correctly spelled and appropriate to the context of the sentence then mark 'No error’ as your answer.

The lustrous potion spilled out of the chalice in Rebecca's hand and onto the wooden floor; there it spluttered and cackled until it fizzled out.