bad
The word 'schlecht' is used in German to express something that is not good, of poor quality, or negative in some way. It can be used as an adjective or an adverb. For example, 'Das Essen ist schlecht' means 'The food is bad', and 'Er spielt schlecht Schach' means 'He plays chess badly'.
Your behavior was bad.
In this example, 'schlecht' is used to denote negative or inappropriate behavior.
The weather is bad today.
In this sentence, 'schlecht' is used to describe the condition of the weather as being unfavorable or not good.
He plays chess badly.
In this context, 'schlecht' is used to convey low proficiency or skill in a particular activity, in this case chess playing.