non-returnable	unnecessary	irregular
illegal	improbable	impossible
unpleasant	unhealthy	unfaithful
irresponsible

A married person who has a sexual relationship with someone who is not his or her spouse is .

Something that doesn’t happen at regular times is .

Something that is unlikely to happen is .

A person who is rude and often angry or something that is not enjoyable is .

People who do not care enough about the results of their actions are .

Something that you cannot take back is .

Something that is not allowed by law is .

An action that cannot happen or be achieved is .

Something that is not good for your body is .

Something that is not needed or wanted is .