אֱ֠דַיִן מַלְכָּ֤א בֵלְשַׁאצַּר֙ שַׂגִּ֣יא מִתְבָּהַ֔ל וְזִיוֺ֖הִי שָׁנַ֣יִן עֲל֑וֹהִי וְרַבְרְבָנ֖וֹהִי מִֽשְׁתַּבְּשִֽׁין׃
그러므로 벨사살 왕이 크게 번민하여 그 낯빛이 변하였고 귀인들도 다 놀라니라
Rashi
became very frightened Aram. שַּׂגִּיא מִתְבָּהַל, extremely frightened.
Ibn Ezra
[Daniel 5:9] Were dismayed (מִֽשְׁתַּבְּשִֽׁין - mishtabshin): [This is] according to its literal meaning (כְּמַשְׁמָעוֹ - k'mashma'o); like a person who does not know what to do.