Foul play is a term used to describe criminal activity or unethical behavior. The crossword solutions for this term include 'HARM' (4 letters), which is causing physical or emotional pain; 'ATTACK' (6 letters), which is an act of aggression; 'SIN' (3 letters), which is an immoral act; 'HOMICIDE' (8 letters), which is the killing of one person by another; 'GUILE' (5 letters), which is cunning or deceitful behavior; 'BOMB' (4 letters), which is an explosive device; 'SLYNESS' (7 letters), which is craftiness or cunning; 'dirtypool' (9 letters), which is an unfair or underhanded tactic; 'dirtytrick' (10 letters), which is a dishonest or deceptive maneuver; and 'MANSLAUGHTER' (12 letters), which is the unlawful killing of another person without malice.