鴃舌

From 南蠻鴃舌／南蛮𫛞舌 (nánmánjuéshé). See there for more.

鴃舌

1. (literary, figuratively) barbarian gibberish; incomprehensible language or dialect of southern China
   • 1900 July 24, 梁啟超 [Liang Qichao], quoting 坂崎紫瀾 (Sakazaki Shiran), 和文漢讀法 [The Chinese Method of Reading Japanese]‎, Tokyo: 秀英舍, page 52:

     其自注：讀者語言絕異，侏離鴃舌，讀下復逆讀上，始為句。 [Classical Chinese, trad.]
     其自注：读者语言绝异，侏离𫛞舌，读下复逆读上，始为句。 [Classical Chinese, simp.]

     Qí zì zhù: dúzhě yǔyán juéyì, zhūlí guīshé, dú xià fù nì dú shàng, shǐ wèi jù. [Pinyin]

     He commented on his own poem, saying the readers’ language was completely different, being strange and incomprehensible. They read forwards, then reversed direction and read backwards, just to form a sentence.

鴃舌

1. (Hakka) Synonym of 結舌／结舌 (“to stammer; to stutter”)

From 南蛮鴃舌(なんばんげきぜつ) (nanbangekizetsu), from 鴃 (geki, “shrike”) +‎ 舌 (zetsu, “tongue”), alluding to the shrike's persistent, screech-like call.

• (Tokyo) げきぜつ [gèkízétsú] (Heiban – [0])
• IPA^(key): [ɡe̞kʲize̞t͡sɨᵝ]

鴃(げき)舌(ぜつ) • (gekizetsu) 

1. (derogatory, archaic) barbarian gibberish; the incomprehensible, annoying language of foreigners
   • 1823, Satō Nobuhiro, 混同秘策 [Kondou Hisaku]:

     支那(シナ)既(スデ)ニ版(ハン)図(ト)ニ入(ハイ)るの上(ウヘ)は其(ソノ)西域(セイイキ)暹羅(シャム)、印度亞(インドア)ノ国(クニ)、侏𠌯(シュリ)、鴃舌(ゲキゼツ)、衣(イ)冠(カン)詭(キ)異(イ)ノ徒(ト)、漸々(ゼンゼン)ニ徳(トク)ヲ慕(シタ)ヒ威(イ)ヲ畏(オソ)レ稽顙(ケイサウ)匍(ホ)匐(フク)シテ臣僕(シンボク)ニ隷(レイ)セザルコトヲ得(エ)ンヤ

     Shina sude ni hanto ni hairu no ue wa sono seiiki Shamu, Indo-a no kuni, Shuri, gekizetsu, ikan-kii no to, zenzen ni toku o shitai i o osore keisō hofuku shite shinboku ni reisezaru koto o en ya

     After China is incorporated into our territory, the nations to the west, namely: Siam, Indonesia^[sic], Okinawa, and other peoples of incomprehensible tongues, those claimants of counterfeit nobility, will gradually come to admire our virtue and fear our majesty, and thus have no choice but to submit themselves to us and become our subjects.