to breathe out loudly and show that you are tired or sad
Molly sighed when she looked at all the information she had to research.
Exhausted from the long day, she let out a deep sigh of relief.
The romantic movie ending made her release a contented sigh.
Frustrated with the situation, he couldn't help but let out a heavy sigh.
The sound of a gentle sigh echoed through the peaceful garden.
