Tamper with' is a phrase that means to interfere with something, usually in an illegal or unethical way. The crossword solutions for this term are DOCTOR (6 letters), nobble (6 letters), RIG (3 letters), MESS (4 letters), FIDDLE (6 letters), MONKEY (6 letters), and MISREPRESENT (12 letters). DOCTOR refers to a person who has studied medicine and is qualified to treat illnesses and injuries. Nobble means to bribe or influence someone in a negative way. RIG means to manipulate something for a desired outcome. MESS means to make something untidy or disorganized. FIDDLE means to tamper with something in order to gain an advantage. MONKEY means to meddle with something. MISREPRESENT means to give a false or misleading impression.