unacceptable in English:

His ideas are too radical to be acceptable to most people.

Let's find a solution that is acceptable to everyone.

Doing math is the only socially acceptable way to masturbate in public.

Cheating on one's spouse is not usually considered acceptable behavior.

OPP unacceptable

There are conditions under which breaking a promise or telling a lie are acceptable.

It is acceptable to mention your job and interests and to ask the other person about his, but be careful not to let the conversation become too personal.

A lot of people exceed the speed limit so it must be acceptable.

In our interpretation, the output data in Table 2 is an acceptable variation of that in Table 1.

Driving after drinking alcohol is not acceptable behavior.

Acceptable and unacceptable are clearly in opposition to each other.

Do you think it is acceptable for animals to be used in experiments?

The factory has been producing higher than acceptable levels of pollution

He had no acceptable answer for that.