verb
certify
SUR-tih-feye
verb
1
To officially confirm that something is true or meets a standard.
"The lab certified the water as safe to drink."
2
To formally declare something in writing.
"The doctor certified the cause of death."
How to Use Certify
Learner’s notesIn plain EnglishTo officially confirm or declare that something is true, safe, or meets a standard.
Common pairings
certify as safe
certify a document
Word Forms
certified past tense, certifies singular
Study it as flashcards or scroll it in Flow — saved to your collection.
Test yourself on “certify”
A quick quiz — meaning, synonyms & usage
→
Etymology
From Old French certefier ("to confirm, make certain").