In linguistics, an epenthetic vowel breaks up a consonant cluster that is not permitted by the phonotactics of a language. Vowel epenthesis typically occurs when words are borrowed from a language that has consonant clusters or syllable coda consonants that are not permitted in the borrowing language, but this is not always the cause. Various languages use different vowels for this purpose. Broadly conceived, linguistics is the study of human language, and a linguist is someone who engages in this study. ... A consonant cluster is a linguistic term, simply meaning a group of consonants which have no intervening vowel. ... Phonotactics (in Greek phone = voice and tactic = course) deals with restrictions in a language on the permissible combinations of phonemes. ... Note: This page contains phonetic information presented in the International Phonetic Alphabet (IPA) using Unicode. ...

• Hebrew and English use a single vowel, the schwa.
• Japanese uses [u] except following [t] and [d], when it uses [o]. For example, the English word street is /sutorito/ in Japanese.
• Korean uses "ㅡ" /ɨ/.
• Colloquial Brazilian Portuguese uses [i] in such words as psicologia, pronounced /pissicologia/. One finds the same pattern in certain variants of Southern American English, e.g. nuclear, pronounced /nukiljar/. This common phonological trait can possibly be retraced to a common origin in the West-African languages brought by slavery.
• In standard Finnish, foreign words never cause epenthesis, and any kind of epenthesis is actually absent. However, some dialects like Savo and Ostrobothnian use an epenthetic vowel. There is no schwa in Finnish, although this term is sometimes used for the epenthetic vowel, whatever it is. The epenthetic vowel is the preceding vowel, appearing in -lC- and -hC-, and in Savo, -nh-, e.g. Pohjanmaa "Ostrobothnia" → Pohojammaa, ryhmä → ryhymä. In Finnish, any consonant clusters occur only between syllables, e.g. kol-mas, where the L, H or N are slightly intensified to achieve a distinctive sound. In the concerned dialects, the consonants gain an epenthetic vowel instead. Ambiguities may result: Salmi (a name) vs. salami. However, in Pohjanmaa, -lj- and -rj- become -lij- and -rij-, respectively. (Foreign words do not cause epenthesis, but words ending in consonants gain -i when they are nativized or a case ending is added, e.g. tank → tankki and thus e.g. translative tankiksi. This has little to do with phonotactics: it is standard grammar, as e.g. moottorvene "motorboat" is perfectly pronounceable to a Finnish speaker and even the standard form in the Savo dialect.)

The Modern Hebrew language is a Semitic language of the Afro-Asiatic language family. ... The English language is a West Germanic language that originates in England. ... See Schwa (art) for the underground artist. ... Brazilian Portuguese is a form of the Portuguese language used mostly in Brazil. ... Southern American English is a dialect of the English language spoken throughout the Southern region of the United States, from central Kentucky and northern Virginia to the Gulf Coast and from the Atlantic coast to eastern Texas. ... Savo (Savolax) is the name of a geographical region in Finland which can refer to: Savo - a historical Province of Sweden (Historical provinces of Finland) Pohjois-Savon maakunta - a current Region of Finland Etelä-Savon maakunta - a current Region of Finland Eastern Finland - a current Province of Finland A dialect... Ostrobothnia, Österbotten (literally East (of) Bottom / the Gulf of Bothnia) or Pohjanmaa (literally Bottom land / soil / ground), is a historical province to the north in Finland. ... See Schwa (art) for the underground artist. ... A consonant is a sound in spoken language that is characterized by a closure or stricture sufficient to cause audible turbulence, at one or more points along the vocal tract. ... A consonant is a sound in spoken language that is characterized by a closure or stricture sufficient to cause audible turbulence, at one or more points along the vocal tract. ... Salami is a sausage of Italian origin. ... This declension (case) indicates a change in state of a noun, with the general sense of becoming X or change to X. In the Finnish language, this is the counterpart of the Essive case, with the basic meaning of a change of state. ...

Reference

Välivokaali  (http://www.internetix.ofw.fi/opinnot/opintojaksot/8kieletkirjallisuus/aidinkieli/murteet/valivok.html)