| Labial | Alveolar | Post-alveolar | Velar | Uvular | |
|---|---|---|---|---|---|
| Nasal | m | n | ŋ | ||
| Stop (fortis) | pː | tː | kː | qː | |
| Stop (lenis) | p | t | k | q | |
| Stop (voiced) | b | d | g | ||
| Affricative (fortis) | tt͡s | tt͡ʃ | |||
| Affricative (lenis) | t͡s | t͡ʃ | |||
| Affricative (voiced) | d͡z | d͡ʒ | |||
| Fricative (fortis) | sː | ʃː | xː | ||
| Fricative (lenis) | s | ʃ | x | ||
| Fricative (voiced) | z | ʒ | ɣ | ||
| Approximant | w | l | |||
| Trill | ʀ |
| Front | Central | Back | |
|---|---|---|---|
| Close | iː i yː y | u | |
| Mid | e̞ː e̞ ø̞ː ø̞ | o̞ː o̞ | |
| Open | aː a |
Additionally, there exist five diphthongs: i͡e̞ y͡ø̞ u͡o̞ i͡a u͡a, written ie yø uo ia ua.
For the purposes of this article, fortis gemination of consonants will be expressed with a doubled consonant symbol: /pː/ "pp". The lenis affricatives /t͡s/ and /t͡ʃ/ shall be written as c and č respectively, and cc and čč when fortis /tt͡s tt͡ʃ/. /ʒ/ shall be written as ž, ʃ as š, and the voiced affricatives /d͡z/ and /d͡ʒ/ as dz and dž respectively. /ɣ/ shall be written as ǧ, and /ʀ/ as r.
Long vowels will be expressed with an acute accent on the vowel: /yː/ "ý". The true mid vowels e̞ ø̞ o̞ will be written as e ø o (é ǿ ó when long).
Qiackeb has two noun classes: animate and inanimate. Animate words are answers to the question "who?" and inanimates are answers to the question "what?" Inanimates are additionally split in two, based on whether they are consonant stem or vowel stem. All animates are vowel stems ending in long vowels. (Personal names might end in a short vowel or a diphthong.) With qwé "woman", bzie "cat", šiam "dog":
| Animate | Inanimate I | Inanimate II | |
|---|---|---|---|
| Absolutive | qwé | bzie | šiam |
| Ergative | qwékes | bzienim | šiamim |
| Genetive | qwéko | bziekan | šiaman |
| Dative | qwéri | bzieǧi | šiami |
| Allative | qwéla | bziela | šiamal |
| Instrumental | qwécas | bziecas | šiamcas |
| Locative | qwégax | bziegax | šiamgax |
| Comparative | qwébal | bziebal | šiambal |
| Vocative | qwés | bzies | šiamo |