I consent to (正式) I endorse(这个属于最学术的说法了,几乎无敌了) I surrport I am on your side(口语的) I assent to (学术) I accede to(学术) I give my approval (正式) I buttress(学术) I plump for 形容那种特别热情洋溢的支持 I sustain 用于法律用于较多. 还有些零散的供LZ参考. 名词 endorsement indorsation indorsement 动词 back stand by bear carry along hold out countenance to be in in favor of second