A GRAIN

Albanian

nuk besoj (disbelieve, doubt, with a grain of salt). (various references)

Arabic 

‏مع ذرة من الملح (with a grain of salt). (various references)

Bulgarian 

с резерва (with a grain of salt). (various references)

Chinese 

粒 (a granule). (various references)

Czech

není na tom ani zrnko pravdy (there's not a grain of truth in it). (various references)

French

avec un grain de sel (with a grain of salt). (various references)

Greek 

μ' ένα σπυρί αλατιού (with a grain of salt). (various references)

Hebrew 

בפקפוק מה (with a grain of salt), בהסתיגות מסוימת (with a grain of salt). (various references)

Hungarian

fenntartással fogad (to take with a grain of salt). (various references)

Japanese Kanji 

一粒 . (various references)

Japanese Katakana 

ひとつぶ. (various references)

Pig Latin

aay aingray.(various references)

Romanian

fãrã nici un pic de rãutate (without a grain of malice). (various references)

Russian 

скептически (skeptically, with a grain of salt), недоверчиво (with a grain of salt). (various references)

Scottish

gràinne (small quantity). (various references)

Serbo-Croatian

s rezervom (grain: with a grain of salt). (various references)

Spanish

con un grano de sal (with a grain of salt). (various references)

Swedish

med en nypa salt (with a grain of salt). (various references)

Turkish

kuşkuyla (doubtfully, suspiciously, with a grain of salt), kuşku ile karşılamak (with a grain of salt), inanmayarak (with a grain of salt), şüpheyle (doubtfully, suspiciously, with a grain of salt). (various references)