First, this Concise Etymology from Oxford updates the mid-1960s Oxford Dictionary of Etymology, edited by Onions ... by adding some new etymologies from the Second OED. However, Oxford clearly did not want to compete with Onion's tome, which is still available in hardcover. So, what to do? This Concise edition, like the full edtion, defines about 17,000 words. The sacrifice you make getting this work is in the actual etymologies themselves. They simply are not thorough or exhaustive. In this Concise Edition, most word origins are not pushed all the way back to their Indo-European or Proto-Indo European roots - something that the similarly priced John Ayto's work does quite well (though with only 8,000 words). If I were to buy only one etymology dictionary, this would not be my first choice. On a budget I would get Ayto's and learn more about fewer words - and for a few dollars more I would recommend the Chamber's/Barnhart - which is far more scholarly and simply more interesting.