The term 'speak badly of' can be expressed in four different ways using crossword solutions. The first is 'TRADUCE', which is a verb meaning to speak ill of someone or something, usually with malicious intent. The second is 'REVILE', which is also a verb meaning to criticize or express contempt for someone or something. The third is 'MALIGN', which is a verb meaning to speak ill of someone or something, often with the intention of damaging their reputation. Finally, the fourth is 'TRASH', which is a verb meaning to criticize or express contempt for someone or something in a harsh or disrespectful manner. All four words refer to speaking badly of someone or something, but each has its own nuances and connotations.