Deludu'nyavite Grammar and Syntax
Basic Sentence Order etc.
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Examples use Southern Dialect.
As an aside, I realized I mentioned this language having a copula. That's actually not true, as I've realized it's a tense marker that is at the end of all sentences, regardless of whether it's something like "He was sad" or "She's swimming downstream."
I'll be quick and list the tense markers here:
Past Tense: wi
Present Tense: wiwo
Future Tense: wo
Looking at this entry now, two years later in 2017, I think that it's likely the language would drop wiwo and use wo for both present and future tenses or drop any tense marker for present tense entirely.
Onward!

We have to start with possessives:
Possessives: The possessive word is ni.
Things that are considered "owned":
Your or someone else's bodypart:
person ni bodypart

Items of a color or other adjective:
color ni item

An item:
owner ni item

Someone's name:
pronoun ni "name" "is" person's name

My name is Bob.

I/me of name is Bob (present tense marker)

ii ni kiitolei na Bob wiwo.

Or, for another example: "Bob's name is short" would be written as "Bob ni kiitolei na zo wiwo." or "Bob of name is small (present tense)". Arguably you could exclude a tense marker if their name has always been Bob. The lack of tense implies it has been and always will be "Bob." Using the present tense marker gives more of an air of "My name is currently Bob."
And it suddenly occurs to me: na is probably less like our "is" and more like the Japanese particle-は. It doesn't denote existence or tense, but links it to certain attributes like an adjective. For example, you can't say "ii na wo" to say "I will exist." You would sound like an idiot and would literally be saying "I will be blank." It's an incomplete sentence, and needs an object or adjective.
Adjectives:
adj. ni item/person


This sentence structure essentially creates possesive nouns as well:
You can consider that ii is "I/me" and thus, iini is "my/mine."
Kalu means "you" and kaluni means "your/yours."
Kyoho means "they/them", so kyohoni means "their/theirs."

The speakers of the language do not "own" animals, places, or people. So a location like "Bob's house" would be "Bob House." This applies to things like significant others, as well. "That house is Bob's." would be written as "that ni house na bob house wiwo." ("That of house is bob house (present tense)")You cannot say it without using the word "house" twice. If you excluded the second "house," you would be literally saying, "That house is Bob." And you don't want to call Bob a house, do you?

Basic Sentence Structure
(on) TIME subject (na) verb direct object tense

By (on), I'm referring to the literal word meaning "on or at a specific time." Would be excluded if you were saying something like "It's 5 o'clock." or "That was yesterday." According to my old notes, at least. Admittedly, it would be totally plausible for a phrase such as "That was yesterday" to include a marker like "at/on" in a language other than English.
Example Sentence 1
On Thursday I took a pearl.

("Took" probably meaning something more like "stole.") The structure is the same, but with an additional tense marker at the end. So, more like:
On Thursday I take a pearl (past tense marker)

(Apparently I retained articles as in English as well...)
In Romanized Deludu'nyavite, this would be:
Kiwe Tomitoto ii giiriku/sic/ daa diasha wi.

I say "/sic/" because 1) My handwriting makes it unclear whether that's gliriku+even though that goes against the rules of the syllabary or giiriku and 2) according to my mini dictionary, the verb for "take" is actually giruki. Totally different. Incidentally, "steal" is written as giiki, so I'm wondering if it's more of a slang word or a colloquialization. I mean, in theory. In practice I'd say it is definitely just me making mistakes between the multiple transcriptions I've made, as well as refining certain words.

Example Sentence 2
English:
I love orange.+the color, not the fruit

Structure:
I(sub) love(verb) orange(d.o.) (present tense marker).

Romanized Delu:
ii minela tomo wiwo


Example Sentence 3: A little more complicated:
English:
Every Wednesday at 2 o'clock, I like to buy oranges for my small friend.

This takes some thinking. Let's separate the sentence into pieces:
Every Wednesday at 2 o'clock I like to buy oranges for my small friend.
This would be written as:
At 2 o'clock every Wednesday i enjoy-buy (pl)orange for I/me small of friend (tense marker)

As a note: 1) I have no idea how "I like to __" or "I enjoy __ing" works because there is nothing written down on this piece of paper, so I am making it up as I go: combining the two verbs. 2) I have the original example using present tense, but considering the all encompassing idea of "every Wednesday," dropping the tense marker to include all Wednesdays past, present and future, would be acceptable.
So, in Romanized Delu:
kiwe eyowato weni wiatoto ii minea giruki retomopino keli iini zo ni kyahoi.

In romanizations, you could write it as iini or ii ni. Same goes for in script, actually. The separation symbol could be put between the two syllables or they could be left as one word. (Yeah, there's a symbol to separate words.)
You'll note the "(pl)orange." This is because there is a prefix to indicate plurality. "An orange" is daa tomopino, but "Oranges" is retomopino. In the case of specific numbers, the pluralizing prefix may be left off, since it is implied that there are more than one by the number. In formal situations, however, "re-" would be included.
Note that giruki appears here again, in the place of "buy." Giruki means "take or buy."

Two more sentence structures:

Imperative
This is tenseless, and there is an imperative word: That word is hooe.
The structure is:
verb hooe

It is implied that you are commanding the person you are speaking to, so there is no need for pronouns other than emphasis.
An example is, in English:
(you) Be quiet!

In Deludu'nyavite, grammar-wise, it's this:
quiet (imperative)

Romanized:
Wai (ni) hooe!

If you wanted to emphasize the "You," because perhaps the first one could apply to a crowd but you want to address one person to whom you are pointing and be very clear you mean that person, you could tack on the pronoun and say Kalu wai hooe! to mean "You, be quiet!"
The article ni is optional in most imperative phrases.

"And then":
And then and then and then and then—
If you want to make a run-on ssentence or make some kind of transition, it's fairly simple.
You just shove a possessive between the two complete sentences.
Essentially:
FULL PHRASE ni FULL PHRASE

Remember, of course, that the tense marker is included in the full phrase. (And probably past tense: so "blankety blank blank wi ni blankety blank blank wi.")

More on pluralizing words and additional use of the possessive article ni!!
If you have a word such as "this" or "that," you must put the plural prefix onto it as well as the word it modifies.
"This bell is very green."
This(poss.) bell is very(poss.) green (present tense)
Korono ni konasa na bai bano(ni) wiwo.

The reason the demonstrative pronoun "this" takes the possessive, in this case, is because it acts in a descriptive way, much like an adjective. What bell? This bell. If it were the subject or object ("This is very green." "Don't touch that.") it would not take the possessive particle.
In addition, the ni after "green" is entirely optional. You can say it is of a green color, or just say it is the color green. It would be more "correct" to include the ni. You would not exclude the ni in a more formal setting. As I look back on this in 2017 I also think that, at some point, the ni in this/that phrases would be dropped due to the repetition of the prefix, becoming "korono konasa."
The reason "very" (bai) takes no possessive particle ni is because it is describing an adjective—it is an adverb, and takes no ni.
Now to make it a plural.
"These bells are very green"
(pl)This(poss.) (pl)bell is very(poss.) green (present tense)
Rekorono ni rekonasa na bai bano(ni) wiwo.


So, to recap:
Adverbs do not take "ni." Adjectives preceding an object always take "ni," and adjectives proceeding an object may or may not take "ni."
Plural prefix re- is added onto the beginning of any this/that words preceding the plural noun.
Demonstrative pronouns take a possessive "ni" if they refer to a specific noun, but if they are the subject or object of a sentence, they need not take "ni."