This comparatively new way of word-building has achieved a high degree of productivity nowadays, especially in American English.
Shortenings (or contracted/curtailed words) are produced in two different ways. The first is to make a new word from a syllable (rarer, two) of the original word. The latter may lose its beginning (as in phone made from telephone, fence from defence), its ending (as in hols from holidays, vac from vacation, props from properties, ad from advertisement) or both the beginning and ending (as in flu from influenza, fridge from refrigerator).
The second way of shortening is to make a new word from the initial letters of a word group: U.N.O. ['ju:neu] from the United Nations Organisation, B.B.C. from the British Broadcasting Corporation, M.P. from Member of Parliament. This type is called initial shortenings. They are found not only among formal words, such as the ones above, but also among colloquialisms and slang. So, g. f. is a shortened word made from the compound girl-friend. The word, though, seems to be somewhat ambiguous as the following conversation between two undergraduates clearly shows:
Who's the letter from?
My g. f.
Didn't know you had girl-friends. A nice girl?
Idiot! It's from my grandfather!
It is commonly believed that the preference for shortenings can be explained by their brevity and is due to the ever-increasing tempo of modern life. Yet, in the conversation given above the use of an ambiguous contraction does not in the least contribute to the brevity of the communication: on the contrary, it takes the speakers some time to clarify the misunderstand-