He smoothed his tongue/ to flatter/ speak flatteringly
Flatter yourself. Hear words to find favor and to persuade. Speak with the sweetness of your lips.
("Keep yourself from an evil woman who flatters with her tongue" - Proverbs 6:11, and so on: "From one who flatters with his tongue, this is Balaam, who flattered Israel with his tongue with blessings that he multiplied for them and lifted up their hearts, and they fell with a thousand arrows" - Rabbi in the Life of Devarim, chapter 1, and so on: "Because he feared and was afraid of the waving of my hand, therefore he will flatter his tongue against me "And they will show me a good end" - Abraham Mapu/ Ayit Tsavoa, 29, and so on: "The Lord said to them with a smoothness of his tongue, Now I see your greatness" - Shai Agnon/ Sifurei HaBeshat, The Lord)
Translation
Expression (Hebrew)
הֶחְלִיק לְשׁוֹנוֹ
Definition (Hebrew)
הִתְחַנֵּף. הִשְׁמִיעַ דְּבָרִים כְּדֵי לִמְצֹא חֵן וּלְשַׁכְנֵעַ. דִּבֵּר בְּמֶתֶק שְׂפָתַיִם.
("לִשְׁמָרְךָ מֵאֵשֶׁת רָע מֵחֶלְקַת לָשׁוֹן נָכְרִיָּה"- מִשְׁלֵי ו כַּד, וְכֵן:"מִמַּחֲלִיק לָשׁוֹן, זֶה בִּלְעָם, שֶׁהֶחְלִיק בִּלְשׁוֹנוֹ לְיִשְׂרָאֵל בִּבְרָכוֹת שֶׁהִרְבָּה לָהֶם וְגָבָה לִבָּם וְנָפְלוּ בְּשִׁטִּים כ"ד אֶלֶף"- רַבֵּנוּ בְּחַיֵּי דְּבָרִים פֶּרֶק א, וְכֵן:"כִּי יָרֵא הוּא וְחָרֵד מִפְּנֵי תְּנוּפַת יָדִי, עַל כֵּן יַחְלִיק לְשׁוֹנוֹ לִי וְיִרְאֵנִי אַחֲרִית טוֹבָה"- אַבְרָהָם מַאפּוּ/ עַיִט צָבוּעַ, 29, וְכֵן:"אָמַר לָהֶם הס"ם בַּחֲלַקְלַקּוּת לְשׁוֹנוֹ, עַתָּה רוֹאֶה אֲנִי אֶת גְּדֻלַּתְכֶם"- שַׁ"י עַגְנוֹן/ סִפּוּרֵי הַבֵּעשְׁ"ט,הס"ם)