A sigh is an expression of emotion, usually one of sadness or disappointment. The crossword solutions for the term 'a sigh' are ALAS (4 letters), EXHALE (6 letters), AAH (3 letters), and OGLE (4 letters). ALAS is an interjection used to express sorrow or regret. EXHALE is the act of breathing out air from the lungs. AAH is an expression of surprise or admiration. OGLE is to look at someone or something with strong admiration or desire.