From Wiktionary, the free dictionary
hold one's tongue (third-person singular simple present holds one's tongue , present participle holding one's tongue , simple past and past participle held one's tongue )
( idiomatic ) To refrain from talking about something.
I don't like his political ideas, but I will hold my tongue .
1837 March, Boz [pseudonym; Charles Dickens ], “Relates How Oliver Twist Was Very Near Getting a Place, Which Would Not Have Been a Sinecure”, in Oliver Twist; or, The Parish Boy’s Progress. [ … ] , volume I, London: Richard Bentley , [ … ] , published 1838 , →OCLC , page 48 :“Hold your tongue , beadle,” said the second old gentleman, when Mr. Bumble had given vent to this compound adjective. “I beg your worship’s pardon,” said Mr. Bumble, incredulous of his having heard aright,—“did your worship speak to me?” “Yes—hold your tongue .”
refrain from talking about something
— see also shut up
Arabic: صَمَتَ ( ṣamata )
Chinese:
Mandarin: 保持 沉默 ( bǎochí chénmò )
Czech: držet jazyk za zuby (cs)
Danish: tie (da) , tie stille
Dutch: please add this translation if you can
Finnish: purra kieltä nsä , pitää suunsa kiinni
French: tenir sa langue (fr)
German: den Mund halten
Greek: κρατάω το στόμα μου κλειστό ( kratáo to stóma mou kleistó ) , κρατώ το στόμα μου κλειστό ( krató to stóma mou kleistó )
Hungarian: befogja a száját
Icelandic: þegja þunnu hljóði
Italian: tenere a freno la lingua , tenere la bocca chiusa
Japanese: 噤む (ja) ( tsugumu ) , 黙りこくる ( damarikokuru )
Kikuyu: gũkira
Korean: please add this translation if you can
Latin: taceō (la) , compesco linguam , favete linguis ( to more than one person )
Maori: whakatōngā
Persian: please add this translation if you can
Polish: trzymać język za zębami (pl) impf
Portuguese: morder a língua
Romanian: tăcea (ro) , a-și ține gura
Russian: придержа́ть язы́к pf ( prideržátʹ jazýk ) , держа́ть язы́к за зуба́ми (ru) ( deržátʹ jazýk za zubámi ) , молча́ть как ры́ба ( molčátʹ kak rýba ) , молча́ть как ры́ба об лёд ( molčátʹ kak rýba ob ljod ) (dated) , набра́ть воды́ в рот (ru) ( nabrátʹ vodý v rot )
Spanish: callarse (es) , guardar silencio , mantener la boca cerrada , morderse la lengua (es) , cerrar el pico
Swedish: knipa igen , knipa käft (sv) , tiga (sv)
Thai: please add this translation if you can
Yiddish: בײַסן זיך די צונג ( baysn zikh di tsung )