Answer: CERT
CERT is a crossword puzzle answer that we have spotted 56 times.
    - Dick Francis book "Dead ___"
 
    - Part of C.D.: Abbr.
 
    - U.S.D.A. stamp abbr.
 
    - Part of C.P.A.: Abbr.
 
    - Like some checks: Abbr.
 
    - Legal writ, for short
 
    - Notarized doc., e.g.
 
    - Supreme Court writ, familiarly
 
    - Pt. of C.P.A.
 
    - Pt. of CPA
 
    - Part of C.D. (abbr.)
 
    - "Dead ___" (Dick Francis mystery)
 
    - "Dead ___" (Dick Francis novel)
 
    - "Dead ___" (Dick Francis's first novel)
 
    - Like some U.S. mail
 
    - Superior court writ: Abbr.
 
    - Legal writ, in brief
 
    - Sure thing, in British slang
 
    - Part of CPA: Abbr.
 
    - Like some US mail
 
    - Part of CD
 
    - Birth doc.
 
    - Dick Francis mystery "Dead ___"
 
    - ''Dead ___'' (Dick Francis mystery)
 
    - Altoid alternative
 
    - Dick Francis book, "Dead ___"
 
    - Part of C.P.A. (abbr.)
 
    - Authenticated:  Abbr.
 
    - Foregone conclusion
 
    - CD portion
 
    - Sure thing 
 
    - Document (Abbr.)
 
    - Official doc.
 
    - Birth doc., e.g.
 
    - Diploma, e.g.: Abbr.
 
    - ___ denied (Supreme Ct. phrase)
 
    - Breath mint
 
    - Breath mint in a roll, informally
 
    - Writ denied by the S. Ct.
 
    - Supreme Court writ, briefly
 
    - Kind of check: Abbr.
 
    - Dick Francis mystery, "Dead ___"
 
    - Tic-Tac alternative
 
    - ___ denied (Supreme Court phrase)
 
    - 'Dead ___' (Dick Francis book)
 
    - Warrant, e.g.: Abbr.
 
    - Guaranteed (abbr.)
 
    - Marriage doc.
 
    - Particular breath mint
 
    - Sure bet
 
    - Legal writ from an appeals court, briefly
 
    - Branded breath mint unit
 
    - Dead ___: very likely thing, to a Brit
 
    - Official document, informally
 
    - Letter of completion, in brief
 
    - Completion document: Abbr.