tightens 是 tighten 的第三人稱單數tightenKK [ˋtaɪtən] /ˈtaɪtən/發音tight 緊的+-en 使…（動詞）→使變緊展開收合tight單字緊的-en字尾使…（動詞）字面：使變緊動詞1旋緊、擰緊、上緊He tightened the screws on the shelf with a small screwdriver.他用小螺絲起子把架子上的螺絲旋緊。2拉緊、繫緊、勒緊She tightened her scarf before stepping out into the wind.她把圍巾繫緊才走進風中。3變緊、收緊、繃緊His grip tightened around the handle as the bus turned.公車轉彎時，他握著扶手的手收得更緊。4加強、強化、收緊The government plans to tighten security at the airport.政府打算加強機場的安全措施。5緊縮、縮減The company tightened its budget after a poor quarter.在一季表現不佳後，公司緊縮了預算。片語動詞1加強、收緊、改善We need to tighten up the rules on overtime pay.我們需要把加班費的規定訂得更嚴格。片語1縮衣節食、省吃儉用口語Many families had to tighten their belts last winter.去年冬天許多家庭不得不縮衣節食。