1. past tense and past participle of tighten; made more tight, firm, or secure

Examples

• She tightened the screws on the cabinet door.
• The rope tightened as he pulled on it.
• Security has been tightened at the airport.
• He tightened his grip on the steering wheel.
• The company tightened its budget after the losses.
• Her jaw tightened when she heard the news.
• The mechanic tightened the bolts on the engine.