Courting disaster is a phrase that describes someone who is acting recklessly or taking unnecessary risks. There are several synonyms that can be used instead of this phrase to convey a similar meaning. These include tempting fate, playing with fire, trampling on danger, living dangerously, tempting disaster, tempting one's luck, dancing with danger, rolling the dice, walking a tightrope, skirting disaster, taking chances, and pushing one's luck. These synonyms all refer to the idea that someone is engaging in risky behavior that could lead to trouble or harm. Choosing the right synonym depends on the context and tone of the sentence or situation.