uni-, un-

Making use of or written in only one language; such as a unilingual book.

1. Relating to something which is shadowed or dark: The taxi drove up to the unilluminated house where Jack, the driver, waited until Mrs. Jones had gone inside and turned on the chandelier before he drove away.
2. Not mentally enlightened: It was thought that Henry was unilluminated because he wouldn't take advantage of the information that was available about his profession at the library.

1. Having only one lobe.
2. Consisting of a single lobe.

Pertaining to having just one hand, the capability of using only one hand, or executed with one hand: Part of the game at the party was for two children to unwrap a present together, each doing it in a unimanual way, which meant that they had to be well coordinated!

Like mononymy, this is a term which refers to anyone who uses only one word for a name; such as, Madonna, Pelé, and Cher.