Ethiopic syllable yo

Its meaning comes from the word around it.

South-Arabian inscriptions in Ethiopia and Eritrea reach the eighth/seventh centuries BCE. A recognizable Ethiopic script, adapted from South Arabian consonant writing for Ge’ez, appears in inscriptions in the second/third centuries CE. In the fourth century CE, vowel forms reshaped it into a syllable-writing system: each sign combines a consonant and vowel.

The fidel script writes Amharic, Tigrinya, and Tigre; Ge’ez remains a liturgical language. “Yo” labels the y-series form, not a universal pronunciation.