(Good) Lord!/Oh Lord!
From Longman Dictionary of Contemporary English(Good) Lord!/Oh Lord!(Good) Lord!/Oh Lord!spokenSURPRISEDWORRIED said when you are suddenly surprised, annoyed, or worried about something SYN heavens Good Lord! Is that the time? → LordExamples from the Corpus(Good) Lord!/Oh Lord!• Good Lord, Tom! What are you doing?