Young and wise/ young but clever
Literary: young and wise.
("Isi ben Yehudah says: Because of gray hair you shall rise"—meaning even all white hairs are included. Rabbi Yosei HaGelili is the first tanna! The difference between them is a young and wise person: the first tanna holds that a young and wise person is not included, while Rabbi Yosei HaGelili holds that even a young and wise person is included" — Kiddushin 32b; and likewise: "And yet, you are a person of reasoning, truly a 'young and wise' one, and in terse wording, as if to express the dependence, it sharpens my intellect" — Chaim Beer / Nozot, 226).
Translation
Expression (Hebrew)
יַנִּיק וְחַכִּים
Definition (Hebrew)
בִּמְלִיצָה: צָעִיר וְחָכָם.
("אִיסִי בֶּן יְהוּדָה אוֹמֵר: מִפְּנֵי שֵׂיבָה תָּקוּם- אֲפִלּוּ כָּל שִׁיבָה בַּמַּשְׁמָע. רַבִּי יוֹסֵי הַגְּלִילִי הַיְנוּ תַּנָּא קַמָּא! אִכָּא בֵּינַיְהוּ יַנִּיק וְחַכִּים, ת"ק סָבַר: יַנִּיק וְחַכִּים לֹא, רַבִּי יוֹסֵי הַגְּלִילִי סָבַר: אֲפִלּוּ יַנִּיק וְחַכִּים"- קִדּוּשִׁין לֵב ע"ב, וְכֵן:"וְאַף עַל פִּי כֵן בַּעַל סְבָרָה אַתָּה,מַמָּשׁ 'יַנִּיק וְחַכִּים', וּבְצִקְצוּק לָשׁוֹן כְּמוֹ לְהַבִּיעַ הַתְּלוּת מַחֲרִיפוֹת שִׂכְלִי"- חַיִּים בְּאֵר/ נוֹצוֹת, 226)