confirm

verb

1.
establish or strengthen as with new evidence or facts
affirm corroborate substantiate support sustain
Derived from:
confirmation confirmative confirmatory
By means of:
confirmation
2.
strengthen or make more firm
starken reassert
Derived from:
confirmation confirmatory
By means of:
confirmation
3.
make more firm
4.
support a person for a position
fourth
Event:
confirmation
Derived from:
confirmation
5.
administer the rite of confirmation to