The opposite of effort, neffort is actually an abbreviation of "non-effort".

The meaning is something that is so poor/ridiculous that it is not worthy of being called an effort
Person 1 - "You fancy men"
Person 2 - "That was an effort"
Person 1 - "You are"
Person 2 - "That was a neffort"
by Martin Heward September 14, 2004
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