"Confirmatory" is a word in ENGLISH

confirmatory ENGLISH
Definition:

Serving to confirm; corroborative.

confirmatory ENGLISH
Definition:

Pertaining to the rite of confirmation.

Few words of positivity

The owner of the Agut d'Avignon had the air of a 1920s dandy who had ruined himself with one mad night of gambling at baccarat and had only been saved by this restaurant, which he seemed to cherish as if it were his wife or a good fountain pen.

Manuel Vázquez Montalbán, La Soledad Del Manager

WORD SUGGESTIONS
Laugh your heart out.

What happens when a hen eats gunpowder ?She lays hand gren-eggs !

verificative ENGLISH

Serving to verify; verifying; authenciating; confirming.

Read the complete definition
voucher ENGLISH

A book, paper, or document which serves to vouch the truth of accounts, or to confirm and establish facts of …

Read the complete definition