ぺらぺら

• (Tokyo) ぺらぺら [péꜜràpèrà] (Atamadaka – [1])^[1]
• IPA^(key): [pe̞ɾa̠pe̞ɾa̠]

ぺらぺら or ペラペラ • (perapera) 

1. (onomatopoeia) speak easily, fluently, in one's native language or in a foreign language
2. (onomatopoeia) (sound produced from) flipping of pages

   ページをぺらぺらとめくる

   pēji o perapera to mekuru

   flipping through pages one after another

3. (onomatopoeia) incessantly (speaking); glibly; garrulously; volubly

   あることないことをぺらぺらしゃべる

   arukotonaikoto o perapera shaberu

   incessantly speaking mixture of facts and fictions

4. very thin, especially cloth or paper

ぺらぺらする or ペラペラする • (perapera suru) suru (stem ぺらぺらし (perapera shi), past ぺらぺらした (perapera shita))

1. Same as above.

• (Tokyo) ぺらぺら [pèrápérá] (Heiban – [0])^[1]
• IPA^(key): [pe̞ɾa̠pe̞ɾa̠]

ぺらぺら or ペラペラ • (perapera) -na (adnominal ぺらぺらな (perapera na), adverbial ぺらぺらに (perapera ni))

1. (onomatopoeia) speak easily, fluently, in one's native language or in a foreign language

   Synonym: 流暢

   彼(かれ)は英(えい)語(ご)のほかにスペイン語(ご)もぺらぺらだ。

   Kare wa Eigo no hoka ni Supein-go mo perapera da.

   He can also speak Spanish fluently on top of English.

2. very thin, especially cloth or paper

   ぺらぺらな本(ほん)

   perapera na hon

   a very thin book