When addressing someone by name, the name follows the vocative particle ma:
- Tewti, ma Prrton! Plltxe nga nìltsan!
- Wow, Britton! You speak well!
The particle is also used when addressing people by a term of relationship, such as ma smuke sisters, or ma oeyä eylan my friends (AMFP).
There has been some speculation in the LearnNavi.org forum that ma may indicate formality, but there is no hint of this in the interviews with Frommer. In this radio interview he explicitly calls ma "vocative."
The ASG dictionary includes the word te defined as particle used in full names. It's not clear what this might signify at the moment. It is a feature of the names in Cameron's initial Na'vi vocabulary, as in Tsu’tey te Rongloa Ateyitan (Avatar script, p.148).