Answer: indorse

AnswerCrossword Clue
INDORSESupport: Var.
INDORSEGive approval to.
INDORSEGive support to.
INDORSESanction: Var.
INDORSEApprove: Var.
INDORSEBack up: Var.
INDORSEO.K.: Var.
indorseendorse
indorseto declare one's approval, also ENDORSE