And there was never a better time to delve for pleasure in language than the sixteenth century, when novelty blew through English like a spring breeze. Some twelve thousand words, a phenomenal number, entered the language between 1500 and 1650, about half of them still in use today, and old words were employed in ways not tried before. Nouns became verbs and adverbs; adverbs became adjectives. Expressions that could not have grammatically existed before - such as 'breathing one's last' and 'backing a horse', both coined by Shakespeare - were suddenly popping up everywhere.