Ibn Ezra

תֻּבּוּ. Should ye be stricken. The ת in תֻּבּוּ, they sat down. (Deuter. 33:3), is part of the root—תֻּבּוּ being Pual of תכה ; comp. וְשֻׁפּוּ and they stick out (Job 33:21)—but here it is the prefix representing the second person; תֻּבּוּ being Hophal of נכה.—You will revolt more and more. The more you are smitten, the more you revolt, while the proper way for you would be to repent; comp., And in the time of his—Ahaz, king of Judah’s—distress did he trespass yet more against the Lord. (2 Chr. 28:22.) סָרָה Rebellious. Adjective; root סרר, ‘to be rebellious,’ comp. סורר, ‘rebellious’ (Deuter. 21:18); supply מלה or דברה ‘ word;’ סרה may also be taken as a substantive, ‘ rebellion.’ The whole head is sick. Whereupon shall ye be stricken? for the whole head is afflicted already with all kinds of sickness, etc. The head and heart are mentioned as the principal parts of the body. דַּוָּי Faint. Adjective; a form like נַּנָּב ‘ thievish,’ סַלָּח ‘ placable.