Bad

Error, mistake.

An item (or kind of item) of merchandise with negative value; an unwanted good.

Unfavorable; negative; not good.

"Abducting children is bad for mothers."

Not suitable or fitting.

"Do you think it is a bad idea to confront him directly?"

Not appropriate, of manners etc.

"It is bad manners to talk with your mouth full."

Unhealthy; liable to cause health problems.

"Lard is bad for you. Smoking is bad for you, too. Grapes are bad for dogs but not for humans."

Badly.

"I didn't do too bad in the last exam."

Fantastic.

To issue a command; to tell.

"He bade me come in."

To invite; to summon.

"She was bidden to the wedding."

To utter a greeting or salutation.

To shell (a walnut).