unworthy

adjective
1
not having the necessary qualities to deserve something, especially respect
ناشایست, بی‌ارزش, نابایسته, ناسزاوار, بی‌لیاقت
opposite worthy
2
not acceptable from somebody, especially somebody who has an important job or high social position
ناشایسته, ناشایست, نامناسب, نابایسته, غیرقابل‌قبول
Such opinions are unworthy of educated people.
synonym unbefitting