TgJ Is33:19 :מְלַעְגִין בְלִישָנְהוֹן מִדְלֵית בְהוֹן סֻכלְתָנוּ‏ : speaking gibberish with their tongues since there is no intelligence in them
See the entire entry for lˁg vb. to stammer; D to mock

TgJ Is33:19 :עַמָא דַהְוָה עַמִיק מַמלַלהוֹן מִלְמִשמַע‏ : a nation whose speech was too barbarous to understand
See the entire entry for ˁammīq adj. deep, high