As if he said nothing/ he has not said a thing/ what he said is of no value
Figuratively: he said things of no value; his words are meaningless.
("He said nothing until his mouth and heart were in agreement" - Terumot 3:8, and likewise: "Rabbi Judah says: one who says Yerushalayim has said nothing" - Nedarim 1:3)
Translation
Expression (Hebrew)
כְּאִילּוּ לֹא אָמַר כְּלוּם
Definition (Hebrew)
בְּהַשְׁאָלָה: אָמַר דְּבָרִים חַסְרֵי עֵרֶךְ. אֵין מַשְׁמָעוּת לִדְבָרָיו.
("לֹא אָמַר כְּלוּם עַד שֶׁיִּהְיוּ פִיו וְלִבּוֹ שָׁוִין"- תְּרוּמוֹת ג ח, וְכֵן:"רַבִּי יְהוּדָה אוֹמֵר הָאוֹמֵר יְרוּשָׁלַםִ לֹא אָמַר כְּלוּם"- נְדָרִים א ג)