1 (used about material, paper, etc) firm and difficult to bend or move （指物质、纸张等）坚硬的，不易弯曲或移动的: My new shoes feel rather stiff. 我的新鞋子穿起来感到有点硬。The door handle is stiff and I can't turn it. 这门把很紧，我转不动。

2 (used about parts of the body) not easy to move （指身体某部位）僵硬的: My arm feels really stiff after playing tennis yesterday. 昨天打过网球后，我的手臂感到很僵硬。

3 (used about a liquid) very thick; almost solid （指液体）浓的，稠的: Beat the egg whites until they are stiff. 将蛋白打到变稠为止。

4 more difficult or stronger than usual 艰难的；强劲的；激烈的: The firm faces stiff competition from its rivals. 公司面临对手的激烈竞争。a stiff breeze/wind 紧吹的微风；烈风

5 (used about sb's behaviour) not relaxed or friendly; formal （指行为）拘谨的，板着脸的，一本正经的

6 (used about an alcoholic drink) strong （指酒）烈性的: a stiff whisky 烈性威士忌酒 ➔stiffness noun [U]