Oligoisolating languages are languages that are easy to memorize due to a small number of morphemes or words. The challenge with these languages is to be able to communicate as much as possible with the simplest system. Because this is hard there are no natural languages that have this property and all languages that are oligoisolating are constructed.
Background Vocabulary
Phonetics - Sounds for language
Phonemic inventory - The set of sounds necessary to speak the language
Phoneme - A single sound. Note that English has many more phonemes than letters, for instance, the O sound is different in book vs dog
Morpheme - The smallest meaningful piece of speech. For instance meaningful is a word, but mean, ing, and ful are morphemes.
Orthography - The set of symbols used to write the language
Romanization - a conversion of the regular orthography into roman letters ex. a, b, c