Piinu

Phonotactics
V and CV are valid syllable structures.

V[+front] → V[+back] / C[+velar]_

ʔ → Ø / #_

V[-long] → V[+long] / [+stress]

Ø → ə / {_#, C_C}

Ø → t / {V_V}

Case
There are 5 cases in Piinu, Nominative (NOM), used to indicate the subject of a transitive or intransitive verb; Accusative (ACC), which marks the direct object of a transitive verb; Genitive (GEN), which marks a possessor; Dative (DAT), which marks the indirect object; and Locative (LOC), which marks the noun a preposition modifies.

Definite
There isn't a specific definite article, instead keti/co/haa'o/ruumi (this/that/yonder/these) are used. They are only used if the context needs clarified.

Verb Morphology
All verbs end in /b/ in the root form

Tense
Piinu has 2 past tenses, a present, and a future. Past 1 indicates far time (dependent on context, for a country far time could be >100 years, but for a kid complaining about how last time they ate was AAAAAGES AGO far time might just mean two hours ago). Past 2 indicates any time nearer than past 1. If this needs disambiguated, a time word can be placed before the verb. A verb never appears without an aspect, and the consonant is consistent over the tense, so tense is analyzed as being CVC, and aspect as the V to complete the syllable. Present tense is unmarked.

Aspect
Perfective indicates an action that is performed in its entirety

Habitual indicates an action that is performed habitually or regularly

Continuous indicates an action that is still in progress in the time frame being referenced

Mood
The realis mood indicates an action that has actually happened, whereas the irrealis mood indicates an action that isn't real or hasn't happened. In non-future tenses realis is unmarked, whereas in the future irrealis is unmarked

Adjective Morphology
Piinu has mostly noun-like adjectives. They mark for the case and number of the noun they modify. Generally they are transparently modified from nouns, ie metallic (sii'ii) is sii (metal) plus -'ii (adjectivizing derivational morpheme).

Syntax
Word order is mostly free due to cases, although in most speech the verb is always final. It can be moved elsewhere for poetic reasons, but this is uncommon.

Adjectives occur after their noun, and agree in case and number.

Postpositions occur directly after their noun.

If a time word is present, it is placed directly before the verb.

Lexicon
I present a small selection of words here, others can be found in my lexicon.ga dictionary

Nouns
* stress induced length is not noted in the dictionary form