From en.wiktionary.org:
[slaven]
** Dutch
*** Pronunciation
- [nl]
*** Noun
[nl]
1. [nl]
** Old Czech
*** Pronunciation
- [zlw-ocs-IPA]
*** Proper noun
[m-pr]
1. [zlw-ocs]
**** Declension
[m.pr]
*** Further reading
- [R:zlw-ocs:Gebauer]
** Serbo-Croatian
*** Alternative forms
- [sh]
- [sh]
- [sh]
*** Etymology
Ultimately from [sh], but, unlike the alternative forms, not directly
inherited. The -a- vowel in the first syllable apparently derives from
Russian Church Slavonic or [sh], perhaps with influence from [sh] by folk
etymology.[1]
*** Pronunciation
- [Slàvēn]
- [sh]
*** Noun
[Slàvēn]
1. [sh] Slav
2. [sh] a man from Slavonia
**** Usage notes
Until the 18th century, the form of this word with -o- in the first syllable
was almost universal throughout the Serbo-Croatian-speaking area (with varying
reflexes of yat). The form with -a- seems to have originated in
[Slavonic-Serbian] and spread under the influence of Pan-Slavism during the
19th century. By the 20th century, the form with -a- became the most common
form in Croatia and all but disappeared from Serbia, effectively reversing the
early 19th-century distribution of the two forms.
**** Declension
{{sh-decl-noun |Slàvēn|Slavéni |Slavéna|Slavena |Slavenu|Slavenima
|Slavena|Slavene |Slavenu|Slaveni |Slavenu|Slavenima |Slavenom|Slavenima }}
*** Proper noun
[Slàvēn]
1. [sh]
**** Declension
{{sh-decl-noun |Slàvēn|Slavéni |Slavéna|Slavena |Slavenu|Slavenima
|Slavena|Slavene |Slavenu|Slaveni |Slavenu|Slavenima |Slavenom|Slavenima }}
*** References
References:
[1]. * [R:sh:Skok:1971]
[sh]