commentary
1. [ noun ] a written explanation or criticism or illustration that is added to a book or other textual material
Synonyms: comment
Examples:

"he wrote an extended comment on the proposal"

Related terms: statement note comment comment gloss
Similar spelling:   comment
  commentator
  commentate
  comminatory
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  commandery
  commend
  Comandra
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  common_teasel
  comminute
  comminate
  commendation
  commander
  commandant