"What a relief!"

• "Wow, am I relieved!"
• Exclamation after a workout
• What a relief! It's hot!
• "Man, I'm glad that's over!"
• 'That was close!'
• "Boy, am I glad that's over!"
• "So that's done!"
• [That was close!]
• What indicates relief from power cut

Wiktionary Word definitions in Wiktionary
interj. Used to show relief, fatigue, surprise, or disgust.