|  |     "Therefor" is archaic and little used today.  It is somewhat like
    other combined words like "henceforward," "therefrom," "hereinafter,"
    etc.  "Therefor" can literally be substituted for "for that," "for
    this," and "for it."  Examples:
    
    	The car stopped in the fast lane; the reason therefor was a
    	broken axle. 
    
    	The consequences therefor are too horrible to contemplate.
    
    The latter sentence means "the consequences _for that_ are too horrible
    to contemplate."  The sentence, "the consequences, therefore, are
    too horrible to contemplate" means something else entirely.  It
    means "Hence, the consequences are too horrible..." or "It follows
    from what was said before, that the consequences..."
    
    Bernie
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|  |     I'll bet with a little effort, we clever computer people could recycle
    this word and maybe even replace *functionality*.
    
    If you wanted to ask why a program existed, you might say, "What
    is it therefor?" We could then specify all the therfor's associated
    with a product......
    
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|  |     Like .1 said there's a big difference in meaning.  There's also a
    difference in stress. 'Therefor' - like herein, whereas, thereto and
    many other combinations of a pronoun of place with a preposition - has
    stress on the second syllable, whereas 'therefore' meaning 'for
    that reason' is usually stressed on the first syllable.
    
    A very stilted example, a bit more formal than bernie's:
    
    	A therefore B
    	B.  The reason therefor is A.
    
    I can think of lots of contexts to use 'therefor' in, but none where it
    wouldn't be clearer to use some other form of words. 
    
    bob
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