blue blazes en · NOUN
Meanings
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(informal, uncountable) Alliterative elaboration or intensification of 'blazes', a euphemism for 'hell'.
It's hot as blue blazes today.
How in blue blazes am I supposed to do that?
‘I’m fit to be tied right now. I’d like to throw my cap up into the air and yell Blue Blazes.’
1932, Delos W. Lovelace, King Kong, published 1965, page 40:What the blue blazes are you talking about?