The ancient manuscript's faded ink rendered much of the text unreadable, requiring advanced imaging techniques to recover the lost words.
古代手稿褪色的墨水使大部分文字无法阅读，需要先进的成像技术来恢复丢失的词语。
Which choice best defines “unreadable”?
A — Not able to be read or deciphered. “unreadable” means not able to be read or deciphered.
Which word means “not able to be read or deciphered”?
C — unreadable. “unreadable” means not able to be read or deciphered.
unreadable — not able to be read or deciphered. In Chinese: 无法阅读的.
unreadable is pronounced /ʌnˈriːdəbl/.
The ancient manuscript's faded ink rendered much of the text unreadable, requiring advanced imaging techniques to recover the lost words. (古代手稿褪色的墨水使大部分文字无法阅读，需要先进的成像技术来恢复丢失的词语。)
illegible, indecipherable, obscure — all close in meaning to unreadable (not able to be read or deciphered).
legible, readable — each the opposite of unreadable (not able to be read or deciphered).
Yes. unreadable is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.