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adj

effing

EH-fihng
adj
1
A euphemistic substitute for "fucking," used as a mild intensifier or curse.
"Where are my effing keys?"

How to Use Effing

Learner’s notes

In plain EnglishA softened stand-in for a much stronger swear word.

When to use it

Informal; used to curse while sounding slightly less crude.

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Where are my _____ keys?

Etymology

Formed from eff, itself derived from the letter name of F, plus "-ing."

Definitions: FreeDict original editorial