unreadable

adjective
1
too boring or difficult to be worth reading
بی‌فایده برای خواندن, خسته‌کننده برای خواندن, غیرجذاب برای مطالعه, دشوار برای مطالعه, ملال‌آور برای خواندن
2
difficult or impossible to read
غیرقابل خواندن, ناخوانا
3
if somebody’s face or expression is unreadable, you cannot tell what they are thinking or feeling
مبهم, رمزگونه, پوشیده
Ed regarded her with an unreadable expression.
His eyes were unreadable as he led her into the office.
4
containing information that a computer is not able to read
ناخوانا, غیرقابل‌خواندن