An abridged audiobook is a more condensed or trimmed down version of a audiobook, while an unabridged is the full, original version. Sometimes audiobook publishers create abridged versions in order to make the audiobook more pleasant to listen to or to make them several hours shorter, which some people prefer. You’ll notice that we always specify whether each audiobook is abridged or unabridged along with how many hours long it is. Many times we have both versions to offer.