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red-letter

[red-let-er] /ˈrɛdˈlɛt ər/
adjective
1.
marked by red letters, as festival days in the church calendar.
2.
memorable; especially important or happy:
a red-letter day in his life.
Origin of red-letter
late Middle English
1400-1450
1400-50; late Middle English
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Value for red

4
4
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