not open mouth



not open one's mouth

 and not utter a word
Fig. not to say anything at all; not to tell something (to anyone). Don't worry, I'll keep your secret. I won't even open my mouth. Have no fear. I won't utter a word.
See also: mouth, not, open

Common Names:

NameGenderPronouncedUsage
Methuselahmə-THOO-zə-lə (English)Biblical
Lyon['laiən]
Pearl[pə:l]
Chedomir-Macedonian, Medieval Slavic
Gumarich-Ancient Germanic
Haskel-Yiddish