e.g. predict (Latin) >> foretell (OE); parchment (Latin) >> bookfell (OE) For help identifying loan words, you can use the Macro-Etymological Analyzer, which can automatically analyze a text and tell you which words are of Latin origin (though the word "as", for some reason, is wrongly listed as being from Latin). Other useful resources include the Merriam-Webster , Collins and Etymology Online dictionaries.