קָלַס II , Pi. קִלֵּס, קִי׳ (denom. of קוֹל, Pales) [to shout, make noise,] 1) to praise; [b. h. to decry, deride]. B. Bath. 176ᵃ אע"פ שק׳ ר"י וכ׳ although R. Yishm. praised Ben N. (commended his argument) the practice follows his (R. Yishmael’s) opinion; Y. ib. X, end, 17ᵈ על מדרשו קִילְּסוֹ he commended him for his mode of argumentation. Lev. R. s. 30 ניקח … ונְקַלֵּס להקב"ה let us take up the Lulab and Ethrog and offer praise to the Lord. Midr. Till. to Ps. CXIV (expl. סֹלּוּ, Ps. LXVIII, 5) קַלְּסוּ (not קילסו) praise him. Ib. Ps. CIV; a. v. fr. —2) to tramp or clap (in wailing ceremonies or on joyous occasions), v. קִילּוּס II, 2; M. Kat. 27ᵇ המְקַלֵּס לא יְקַלֵּס וכ׳ the tramper (at mourning ceremonies) must not tramp with a sandal on his foot, but with a shoe, to avoid accident.
Hithpa. - הִתְקַלֵּס to be praised; to be done honor to by song, clapping &c. Y. Ḥag. I, 76ᶜ כשהיה רואה … מִתְקַלְּסִין (not סון …) whenever he saw a deceased person or a bride honored.