The term 'touch off' can be defined as to set off or trigger something. The crossword solutions for this term are EXCITE (6 letters), ERUPT (5 letters), START (5 letters), BURN (4 letters), IGNITE (6 letters), CAUSE (5 letters), TRIP (4 letters), and SPARK (5 letters). Each of these words can be used to describe the act of setting off or triggering something, whether it be an emotion, an event, or a reaction. For example, EXCITE can be used to describe the act of stirring up an emotion, ERUPT can be used to describe the act of setting off a volcanic eruption, START can be used to describe the act of initiating an event, BURN can be used to describe the act of igniting a flame, IGNITE can be used to describe the act of lighting a fire, CAUSE can be used to describe the act of setting off a reaction, TRIP can be used to describe the act of setting off an alarm, and SPARK can be used to describe the act of setting off a SPARK.