The correct spelling of the phrase "wast in favor of" is "wasted on behalf of". The word "wasted" is spelled with a long "a" sound, represented in IPA by /weɪstɪd/. The word "on" is spelled with a short "o" sound, represented in IPA by /ɒn/. And "behalf" is spelled with a long "a" sound, represented in IPA by /bɪˈhɑːlf/. This phrase is commonly used to describe how effort or resources are being misused or expended for little gain.