tautens
v. (使某物)變緊( tauten的第三人稱單數 ); 拉緊; 繃緊; 緊張
If a part of your body tautens or if you tauten it, it becomes stiff or firm.
Her whole body tautened violently...
她全身緊繃得厲害。
There are exercises that tauten facial muscles.
有些練習動作可以讓面部肌肉緊繃起來。