from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Of or being an alphabet, such as the Arabic or Hebrew alphabets, whose letters have a single written form without being distinguished into uppercase and lowercase letters.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective linguistics That it makes no distinction between
upperand lower case, but rather has only one case.
Sorry, no etymologies found.
It will be written very informally (often in “unicase”: long stretches of lowercase with ALL CAPS used for emphasis) with slang spellings, yet will not be as informal as instant messaging conversations (which are riddled with typos and abbreviations) …