buttress [buttressed, buttressing, buttresses](support something or someone by supplying evidence) verb [UK: ˈbʌ.trəs] [US: ˈbʌ.trəs]
corroborate [corroborated, corroborating, corroborates](To confirm or support with additional evidence) verb [UK: kə.ˈrɒ.bə.reɪt] [US: kə.ˈrɑː.bə.ˌret]Ray was willing to corroborate Gary's story, but the police were still unconvinced that either of them were telling the truth. = Ray estaba dispuesto a corroborar la historia de Gary, pero la policía no estaba convencida aún de que alguno de los dos dijera la verdad.