Solar

Solar is an auxiliary language. Solar is used as the trade language of humans, and is often used alongside a place's main language in signs, menus or information centers.

Vowels
Since some languages are characterized by a 3-vowel system lacking /e/ and /o/, Solar allows for its /e/ and /o/ to be replaced by [ai] and [au], respectively.

Phonotactics
The phonotactics are exclusively CV, except for the start of a word which can be V. /ji/ and /wu/ are the only CV syllables not to be allowed.

Grammar
Solar is an isolating language devoid of inflection. Syntax and particles determine the roles of each component of a sentence.

Vocabulary
The vocabulary has been selected from the world's most spoken languages, with Indo-European, Sino-Tibetan, Turkic, Austronesian and Afroasiatic language families being some of the most significant vocabulary donors.