I'm/I'll be damned if...
I'm be damned if I (do something)
rude slang I am determined not to do something. I'm be damned if I let some young upstart like you take control of my company!
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I’m/I’ll be ˈdamned if...(British English also I’m/I’ll be ˈblowed if ...) (spoken) I certainly will not, do not, etc: I’m damned if I will lend any money to that lazy son of mine. ♢ ‘Why is she so late?’ ‘I’ll be blowed if I know.’
See also: damned
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