CONFIRM, CONFIRMATION, CONFIRMATORY, CONFIRMED
ADJECTIVES
1432 ► ROBORATE confirmed, ratified, strengthened → obs.
1639 ► RATIFICATORY confirmatory → Sc. obs. rare
1644 ► RATIFIED confirmed, settled → rare
1720 ► RATIFACTORY confirmatory → obs. rare
1823 ► EVEN-DOWN confirmed, habitual → Sc.
NOUNS
1450 ► VEREFIANCE confirmation, verification; the act of proving → obs.
PHRASES
1842 ► WILL A DUCK SWIM? a phrase of enthusiastic confirmation
1891 ► DOES A DUCK SWIM? a phrase of enthusiastic confirmation
VERBS
..900 ► FASTEN to confirm, to make sure, to ratify an agreement → obs.
1338 ► SICKER to confirm by pledge or surety → now rare or obs.
1400 ► RATIFY to confirm or declare the truth or correctness of a statement, etc. → rare or obs.
1432 ► ROBORATE to confirm, to ratify, to corroborate (a charter, league, etc.) → obs. exc. Sc.
1440 ► AFFEER to confirm, to settle
1886 ► CLINT to confirm, to clinch → Eng. dial. (Bk.)
1910 ► APPLY THE ACID → PLY THE ACID → PUT THE ACID ON → TRY THE ACID to confirm → sl.
1991 ► CHECK THE DICTIONARY to confirm vague or confusing orders or directions → US, Vietnam war usage
Lexicophilia 