Sigh/saɪ/ Definition 1 of 3Pro Tip 1/3Emotional Indicator Used to show emotions without words, like frustration or sadness. Listening to the sad news, he could only sigh. Pro Tip 2/3Response to Stress Expresses stress, giving a physical response to an overwhelming situation. Faced with the pile of work, she sighed. Pro Tip 3/3Sign of Relief Shows a release of tension or worry, often after resolution. Once the danger passed, I couldn’t help but sigh with relief.