| Olubo | |
| Nativename: | Lolubo |
| States: | South Sudan |
| Ethnicity: | Olubo |
| Date: | 2017 |
| Ref: | e25 |
| Script: | Latin |
| Familycolor: | Nilo-Saharan |
| Fam2: | Central Sudanic |
| Fam3: | Eastern |
| Fam4: | Moru–Madi |
| Fam5: | Southern Madi |
| Iso3: | lul |
| Glotto: | olub1238 |
| Glottorefname: | Olu'bo |
Olubo or Lolubo is a Central Sudanic language spoken by 33,000 Olubo people in Southern Sudan.
| Implosive | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| voiceless | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | ||||
| voiced | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | |||||
| prenasalized | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | |||||
| voiceless | pronounced as /ink/ | pronounced as /ink/ | |||||||||
| voiced | pronounced as /ink/ | pronounced as /ink/ | |||||||||
| Approximant | pronounced as /ink/ | pronounced as /ink/ | pronounced as /ink/ | ||||||||
| Back | +Vowels | Close | pronounced as /ink/ | pronounced as /ink/ | ||
|---|---|---|---|---|---|---|
| Near-close | pronounced as /ink/ | pronounced as /ink/ | ||||
| Close-mid | pronounced as /ink/ | pronounced as /ink/ | ||||
| Open-mid | pronounced as /ink/ | pronounced as /ink/ | ||||
| Open | pronounced as /ink/ |
Vowels form two vowel harmony sets, based on advanced and retracted tongue root. The [-ATR] group is pronounced as //ɪ, ɛ, ɔ, ʊ//, and the [+ATR] group is pronounced as //i, e, o, u//. pronounced as /link/ is phonetically [-ATR] but is found in roots of both sets.
There is a tenth vowel quality pronounced as /link/, which only occurs after pronounced as /link/. When pronounced as /link/ and pronounced as /link/ are in separate morphemes, pronounced as /link/ is in free variation with pronounced as /link/.
Olubo has high pronounced as /link/, mid pronounced as /link/, and low pronounced as /link/ tones.There are also six compound tones, low-mid pronounced as /link/, low-high pronounced as /link/, mid-low pronounced as /link/, mid-high pronounced as /link/, high-low pronounced as /link/, and high-mid pronounced as /link/.