>Without a second thought >'He'll gamble away thousands of dollars without a second thought.' >Usage: He'll gamble away thousands of dollars without the slightest consideration >'She ran after the thief without a second thought.' >Usage: She ran after the thief without the slightest hesitation or consideration for possible consequences >'He punched the man out without a second thought' >Usage: He punched the man out without considering whether or not he should do it
I challenge you to learn English before posting about this any more.
