This is the 7592nd most frequent Russian word.
ефс
The word "ефс" does not exist or is not recognized as a standard Russian word.
ефс is used as a term being defined or discussed.
В школе ребята обсуждали, что такое ефс.
At school, the kids discussed what 'efs' meant.
ефс is used as a noun being referred to in a narrative.
Он упомянул ефс в своем рассказе, и все удивились.
He mentioned 'efs' in his story, and everyone was surprised.
ефс is used as a subject noun describing an important component.