#vigorous languages

Semnani (ISO 639-3: smy), also spelled Simnani, is a vigorous language spoken in Semnan province, Iran by about 60,000 people (as of 2007) - most of whom are Muslim - of all ages. There are generally positive attitudes toward the language's use. It belongs to the Semnani (Northwestern Iranian) subgroup of the Indo-European language family. Speakers of Semnani also use Iranian Persian, in which 93% of the population is literate. Some linguist's believe that Biyabunaki is a dialect of Semnani. A dictionary has been produced for Semnani.

Suku (ISO 639-3: sub), also known as Kisuku, is a vigorous language spoken in South Bandundu province (west of Feshi, Moanza, and Mwela areas) in Democratic Republic of the Congo by about 50,000 (in 1980). According to some linguists, it belongs to the Yaka (H.32) subgroup of the Niger-Congo language family, but others say it belongs to the Kongo (H.10) subgroup or the Holu (K.10) subgroup. Speakers of Suku also use Kituba. Portions of the Bible have been translated into the language in 1973.

Kohumono (ISO 639-3: bcs) is a vigorous language spoken in Obubra, Cross River, Nigeria by about 30,000 people (in 1989) of all ages. It belongs to the Kohumono branch of the Niger-Congo language family. It is also known as Bahumono, Ediba, Ekumuru, Humono, and Ohumono.

Tanzania Nyika (ISO 639-3: [nkt]) is a vigorous, unwritten language spoken in Rukwa Region, Tanzania by about 25,000, as of 2007. It belongs to the Nyiha-Safwa (M.23) branch of the Niger-Congo language family. It is also known as Kinyiha or Kinyika. There are no known dialects of Tanzania Nyika, although it is reportedly similar to Malawi Nyiha by about 67%, Malila by about 74%, and Safwa by about 71% (Roth 2011). It is used in all domains by all ages. Swahili is used as an L2 language by speakers of Tanzania Nyika.