When something is absorbing, it holds you for a long time. A book, a film, a game, a long talk — you sit down for a little while, and then an hour has gone. You are not just a bit interested; you do not want to stop. People say an absorbing story, an absorbing documentary, an absorbing conversation. It is a warm compliment, used by teachers, reviews, and ordinary talk, though it sounds a little more careful than “so interesting” or “I couldn’t put it down.” Younger speakers often choose those plainer phrases; absorbing is still alive, just a shade more bookish. People stretch it a little: an absorbing problem, an absorbing hobby, even an absorbing afternoon. Though actually, the older picture inside the word is “to soak up,” like a cloth taking in water. When we call a film absorbing we do not mean it is wet. We mean it soaks up your attention and keeps it. One small care: the thing is absorbing; you are absorbed in it.