... Webster began his greatest work, An American Dictionary of the English language. In preparing the manuscript, he devoted ten years to the study of English and its relationship to other languages, ... Webster began his greatest work, An American Dictionary of the English language. In preparing the manuscript, he devoted ten years to the study of English and its relationship to other languages, ... Webster began his greatest work, An American Dictionary of the English language. In preparing the manuscript, he devoted ten years to the study of English and its relationship to other languages,...