כְבַד פֶּה וּכְבַד לָשׁוֹן

ביטוי (אנגלית)

Heavy of mouth and heavy of tongue/ stammerer/ tongue-tied/ slow of speech

הגדרה (אנגלית)

Stammering; unable to express oneself clearly.

("And Moses said to the LORD, 'Please, my Lord, I am not a man of words, neither from yesterday nor from the day before yesterday... for I am heavy of mouth and heavy of tongue'" - Exodus 4:10 (Moses to the LORD), and likewise: "I thought... like our own Heikel, heavy of mouth" - Mendele Mocher Sforim, The Travels of Benjamin the Third.)