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See also: effin, effin', f'ng, f'n, F-ing

Derivative of the word ‘fucking’, 'effing' means litterally ‘F-ing’. You may see it used on a message board where derogatory words (such as the f-word) are not allowed, to take the place the un-allowed.(Note that on sites such as GameFAQs, this is known as censor bypassing, and you most likely will get modded for it, whether be by a nobleman or some n00b merely&purely because s\he can.) It is, however, its own, unique word, seperate from ‘fucking’ or ‘f'ing’ or ‘F-ing’ in its entireity.

The reason that "I'm late for class"'s definition of this word has received such low ratings is for the fact that s\he acted as a ‘language elitist’ and instantly put the word down, when in actuality s\he did not know the etymological origin of the word and whe\how\under what contexts.. it is generally used.
"Dumbass.."
"Geez, get off my effin' case!!"
effing by Victor Van Styn August 26, 2005
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Originally used in a song by the Nigerian group Maintain, it has become common parlance for any thing or object used to give an impression of wealth or flashiness, e.g
"Cate's bling has so much effizi on it", "The effizi on that show last night was something else"
effizi by trublvr March 25, 2009
Related Words
Effie effin effing Effit Efficient effigy effingham effics Efficiency Effi

efficienist 

An individual whose life is centred on being as efficient as humanly possible.
Neil is an efficienist, there is no doubt about that. He hates inefficient people, and believes there should be a law restricting those people from interacting with society.
efficienist by Neil Kifflife June 22, 2012

effin' 'n' jeffin'

Another term for swearing made popular by the Karl Pilkington during his XFM days.
There will be no effin' 'n' jeffin' during the funeral.
effin' 'n' jeffin' by bxnzi July 19, 2016

Effing and Jeffing

A variation on the term "Effing and Blinding", meaning to swear or curse profusely. Used in the North of England, notably by one Karl Pilkington in an episode of the Ricky Gervais Show.
Karl: I've just slagged off that octopus, but at no point was I effing and jeffing about it.
a way to say the word fuck,without getting into trouble,or it being censored,etc
comes from one of the word fucks names
the f word,f is prounounced eff,or ef,whatever,thus creating effin
mistl means fuck or fucking
effin' by O_O-age 13 September 20, 2003

Effinhot 

The highest level of hotness on the hot-o-meter (a virtual measuring instrument of hotness of a person)
Question: How do you think he rates on the hot-o-meter?

Answer: He's effinhot.
Effinhot by effinhot June 30, 2011