Wholeheartedly/ expressly/ distinctly/ in all sincerity
By metaphor: in clear or certain speech. With great confidence without any doubt (the opposite of the expression: "with half a mouth" whose meaning by metaphor is: words spoken hesitantly or not decisively).
("A song of ascents. When the LORD restored the fortunes of Zion, we were like those who dream. Then our mouth was filled with laughter and our tongue with joyful shouting" - Psalms 126:1, and similarly: "A person must give peace to his friend with a full mouth" - Tanchuma Naso 20, and similarly: "Do we not have the permission, it seems to me, to say about him 'with a full mouth,' for he has two hundred thousand" - Shalom Aleichem / Seventy-five thousand, MAD, and similarly: "A word of peace with a full mouth / and from the weapon do not let up" - Chananya Raichman / Proverbs and Inscriptions, Paths of Politics)
Translation
Expression (Hebrew)
בְּפֶה מָלֵא
Definition (Hebrew)
בְּהַשְׁאָלָה: בְּדִבּוּר בָּרוּר אוֹ וַדָּאִי. בְּבִטָּחוֹן רַב לְלֹא כָּל פִּקְפּוּק (הִפּוּכוֹ שֶׁל הַבִּטּוּי "בַּחֲצִי פֶּה" שֶׁמַּשְׁמָעוֹ בְּהַשְׁאָלָה : דְּבָרִים הַנֶּאֱמָרִים בְּהִסּוּס אוֹ לְלֹא נֶחְרָצוֹת).
("שִׁיר הַמַּעֲלוֹת בְּשׁוּב ה' אֶת שִׁיבַת צִיּוֹן הָיִינוּ כְּחֹלְמִים. אָז יִמָּלֵא שְׂחוֹק פִּינוּ וּלְשׁוֹנֵנוּ רִנָּה"- תְּהִלִּים קכו א, וְכֵן: "צָרִיךְ אָדָם לָתֵת שָׁלוֹם לַחֲבֵרוֹ בְּפֶה מָלֵא"- תַּנְחוּמָא נָשָׂא י, וְכֵן: "הֲלֹא יֵשׁ לָנוּ הָרְשׁוּת, כִּמְדֻמֶּה לִי, לֵאמֹר עָלָיו בְּפֶה מָלֵא, כִּי יֵשׁ לוֹ מָאתַיִם אֶלֶף"- שָׁלוֹם עֲלֵיכֶם/ חֲמִשָּׁה וְשִׁבְעִים אֶלֶף, מַד, וְכֵן: "דְּבַר שָׁלוֹם בִּמְלוֹא הַפֶּה-/וּמִן הַנֶּשֶׁק אַל תַּרְפֶּה"- חֲנַנְיָה רַיְכְמָן/ פִּתְגָּמִים וּמִכְתָּמִים, שְׁבִילֵי פּוֹלִיטִיקָה)