This is the 3136th most frequent Chinese word.
不惜
"Not hesitate" or "not spare."
The phrase '不惜一切代价' means 'not sparing any cost,' indicating utmost determination.
为了完成任务,他不惜一切代价。
In order to complete the task, he does not spare any cost.
'不惜放弃' implies the willingness to give up something valuable for a purpose.
她不惜放弃自己的舒适生活来帮助别人。
She does not hesitate to give up her comfortable life to help others.
Here, '不惜动用' signifies deploying every available resource without hesitation.