The debate about scientific dishonesty over the last few years has revealed differences and confusion regarding scientific dishonesty. Every branch of science ought to have well-established criteria for scientific dishonesty, to be able to distinguish between sloppy science and dishonest science. Sc. dishonest behaviour is characterized by being dishonest or reckless, and by twisting the scientific message. The aim of this article is to a) provide a list of criteria to define scientific dishonesty, and b) exemplify and discuss specific linguistic aspects of the discussion. Furthermore it will be argued that agreeing on common rules is not enough as general rules can be interpreted differently. Therefore a common judgement is necessary, i.e. a committee, either local or national. It will be advised for any local institution to establish a committee of their own.