Triptote or diptote - how do you tell? I am interested in this question in general and specifically in the Arabic names. Take مُحَمَّدٌ [muHammadun] and أَحْمَدُ [aHmadu]. The former is a triptote and the latter is a diptote. No difference in the written language except for the accusative forms, which become: مُحَمَّدًا [muHammadan] and أَحْمَدَ [aHmada]. The diptotes take no accusative markers and in spoken Arabic the final endings are not pronounced, perhaps sometimes in accusative. There is probably no rule, I know most feminine names are diptotes (please correct me) but is there a pattern I could use or is there a method/link to find out whether a word or a name is a diptote? Dictionaries will cater for normal words, what about names? It seems very hard to find this info. Arabic Wikipedia doesn't show the vowelling, so you can't sometimes how to pronounce names of famous people. Your help is appreciated.