BE SILENT

Arabic 

سكت (to be silent). (various references)

Bulgarian 

помълчавам (be silent for a while, keep silence for short time). (various references)

Finnish

vaieta (be quiet, become silent, cease, conceal, keep quiet, keep silence), olla vaiti (observe silence), olla hiljaa (keep quiet), olla ääneti (keep silence). (various references)

French

mutisme. (various references)

German

schweigen (silence, to be silent, to keep still). (various references)

Hebrew 

לשתוק (hold ones peace, hold one's tongue, keep mum, shut up), לדום (stand still). (various references)

Indonesian

berdiam (say nothing, tacit), mendiam. (various references)

Inuktitut

nipaittuq (to be silent). (various references)

Italian

tacere (be quiet, be still, hush, keep silent, pass over in silence, silence). (various references)

Japanese Kanji 

黙る (to be silent). (various references)

Japanese Katakana 

しんとする (to be deadly silent, to be silent), だまる (to be silent). (various references)

Pig Latin

ebay ilentsay.(various references)

Romanian

taci (cut it short, hush, keep quiet, lie down, shut up, silence). (various references)

Spanish

acallar (silence). (various references)

Swedish

tiga om (be silent about). (various references)

Turkish

sessiz olmak (keep quiet), sessiz kalmak (hold one's peace, keep quiet). (various references)

Welsh

tewi (keep silence). (various references)