15. In the north of England in the 19th century, tools were often loaned or lent to poorer workers, some of whom relied on these tool-loansmen to ply their trades. One part of this practice was that is the worker picked the same tool ten times running, the loansman would keep it reserved for them thereafter: liking a tool enough to give it its tenth use then became known as "tenth-use-ing", which is why we now "enthuse" about things we like.