Definition of for once or this once in English:

for once (or this once)

On this occasion only, as an exception: I hope you’ll forgive me this once
More example sentences
  • The day stayed dry and the sun shone occasionally, and for once there were only a few spots of rain.
  • They're calling it the deal of all deals, and for once you can forgive the hyperbole.
  • But just this once, just for a few moments today I felt socially useful.
See parent entry: once

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Pronunciation: ˈbuːfɒ̃
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styled to stand out in a rounded shape...