Double-faced/ two-faced/ hypocritical
Having two faces. Figuratively: a hypocritical person who does not say what is in his heart. His mouth and heart are not equal.
(The Holy One, Blessed be He, created double-facedness in the first man, as it is said (Psalms 139): 'Behind and before You have formed me' - Berakhot 61a, and also: 'At the time they were created, double-faced beings were created and then cut, becoming two backs: a back for the male and a back for the female' - Vayikra Rabbah 14:1, and also: 'As it was with the first man, double-faced beings were created back to back, and afterwards they were cut and became face to face' - Rabbi Nachman of Breslov / Likkutei Moharan, Torah 108.)
Translation
Expression (Hebrew)
דּוּ פַּרְצוּפִי
Definition (Hebrew)
בַּעַל שְׁנֵי פַּרְצוּפִים. בְּהַשְׁאָלָה: אָדָם צָבוּעַ שֶׁאֵינוֹ אוֹמֵר אֶת אֲשֶׁר בְּלִבּוֹ. פִּיו וְלִבּוֹ אֵינָם שָׁוִים.
("דּוּ פַּרְצוּפִין בָּרָא הַקָּדוֹשׁ בָּרוּךְ הוּא בָּאָדָם הָרִאשׁוֹן, שֶׁנֶּאֱמַר(תְּהִלִּים קל"ט) אָחוֹר וְקָדַם צָרַתְנִי"- בְּרָכוֹת סא ע"א, וְכֵן:"בְּשָׁעָה שֶׁנִּבְרְאוּ ,דּוּ פַּרְצוּפִי נִבְרְאוּ וְנָסְרוּ וְנֶעֶשְׂתָה שְׁנַיִם גֵּבִים: גַּב לְזֵכֶר וְגַב לַנְּקֵבָה"- וַיִּקְרָא רַבָּה יָד א, וְכֵן:"כְּמוֹ שֶׁהָיָה אֵצֶל אָדָם הָרִאשׁוֹן,שֶׁנִּבְרְאוּ דּוּ פַּרְצוּפִין אָחוֹר בְּאִחוּר, וְאַחַר כָּךְ נְנַסֵּר וְהָיָה פָּנִים בְּפָנִים"-ר' נַחְמָן מִבְּרֶסְלָב/ לִקּוּטֵי מוהר"ן, תּוֹרָה ק"ח)