Alas/əˈlæs/ Definition 1 of 3Pro Tip 1/3Expressing Sadness Use 'alas' to show heartfelt sorrow in response to an event or outcome. Alas, the old tree in the garden has withered away. Pro Tip 2/3Soften Bad News 'Alas' is often used to introduce disappointing news more gently. Alas, the concert has been canceled due to rain. Pro Tip 3/3Concern for Others It's appropriate to use 'alas' when expressing concern for someone's misfortune. Alas, he's been ill and couldn’t attend the meeting.