confirm/ kən'fəːm /

1.vt.[+statement] [ report] [ story etc] 
(verify) 肯定

2.vt.[+appointment] [ date] 
确认

3.vt.[+suspicion] [ fear] 
(bear out) 证实

4.vt.[宗] 
给…施坚信礼

to confirm that...
 [person,data+] 证实…