Cry after a close call

• "Boy, is it hot!"
• 'That was close!'
• 'Close call!'
• Exclamation like a half-formed whistle
• "That's finally done!"
• Exclamation of relief
• Voiced sigh of relief
• "Boy, I'm glad that's over!"

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
exclamation of astonishment, etc., early 15c., a whistling sound, of imitative origin.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
interjection EXAMPLES FROM OTHER ENTRIES ▪ Whew , it's hot outside.