linguistic:voice_change, structural:reformatting
Gemination

As in most other Ethiopian Semitic languages, gemination is contrastive in Amharic. That is, consonant length can distinguish words from one another; for example, alä 'he said', allä 'there is'; yǝmätall 'he hits', yǝmmättall 'he will be hit'. Gemination is not indicated in Amharic orthography, but Amharic readers typically do not find this to be a problem. This property of the writing system is analogous to the vowels of Arabic and Hebrew or the tones of many Bantu languages, which are not normally indicated in writing. Ethiopian novelist Haddis Alemayehu, who was an advocate of Amharic orthography reform, indicated gemination in his novel Love to the Grave by placing a dot above the characters whose consonants were geminated, but this practice is rare.