Quinn Cook

Let it be known from the outset that I have considered the thought project of unmistakable sentences for quite a long time.

Unfortunately, if I had bothered to peruse the internet, I would have realized that they are not so remarkable, and in fact have a name already. According to Catherine Himes in A Laboratory Course in Reading and Writing (which I was reading purely by chance):

A sentence in which the meaning is not completed until the end is called periodic; a sentence which continues after the main statement is complete is called loose.

This quotation in my copy was published in 1944, and the term was coined in 1928, beating me by a mile.

Being a sore loser, I will naturally point out that this term refers to the placement of the main idea, not necessarily the phrasing thereof—making a slight (very slight) distinction and thus preserving (not really) my own idea as original (though futile).