Tsmesis

Tsmesis – this is a figure consisting in intentionally breaking a word into two parts for emphasis. Goldwyn once wrote, "I have but two words to say to your request: Im Possible." Milton writes, "Which way soever man refer to it."
In one text of William Wordsworth's "The Tables Turned," we learn that "Our meddling intellect / Mis shapes the beauteous forms of things" (as opposed to misshapes).
In English, this rhetorical scheme is fairly rare, since only the compounds of "ever" readily lend themselves to it, but it is much more common in Greek and Latin.