I'm not a linguist and only studying a linguistic subject as an elective so I hope this makes sense:
If I've determined a language is tonal based off the numbers assigned to each word, how am I to interpret a word that has no number assigned to it?
Naw5 tsi5 uasi hau4 lu1 va2
How should I interpret uasi?
The things I'm wondering are: Can this word be voiced in any tone? Is there a neutral tone of sorts that this word adopts? Is there a specific term used to describe this absence?