1. 头昏眼花的：slapdash 草率 | slaphappy 头昏眼花的 | slapjack 薄煎饼

1. dazed from or as if from repeated blows

    e.g. knocked silly by the impact
           slaphappy with exhaustion

    Synonym: punch-drunksilly

2. cheerfully irresponsible

    e.g. carefree with his money
           freewheeling urban youths
           had a harum-scarum youth

    Synonym: carefreedevil-may-carefreewheelinghappy-go-luckyharum-scarum