To walk like a shadow
Walked limp. In question: He was weak and broken. He was depressed.
("Like the shadow of his footsteps I have gone, I have been shaken like a locust" - Psalms 11:23, and so: "Like the shadow he walks on the earth, I have not remained on him, I have spent his life on his corpse" - Sha'i Agnon/ In the blood of her days)
Translation
Expression (Hebrew)
הִתְהַלֵּךְ כַּצֵּל
Definition (Hebrew)
הָלַךְ שָׁפוּף. בְּהַשְׁאָלָה: הָיָה חַלָּשׁ וְשָׁבוּר. הָיָה בְּדִכָּאוֹן.
("כְּצֵל כִּנְטוֹתוֹ נֶהֱלָכְתִּי נִנְעַרְתִּי כָּאַרְבֶּה"- תְּהִלִּים קָט כג, וְכֵן:"כְּצֵל יַהֲלֹךְ עַל הָאָרֶץ, לֹא נִשְׁאַר עָלָיו בִּלְתִּי אִם עוֹרוֹ עַל גְּוִיָּתוֹ"- שַׁ"י עַגְנוֹן/ בִּדְמֵי יָמֶיהָ)