General Antonyms:
* Conceal: To hide or keep secret.
* Obscure: To make unclear or difficult to understand.
* Suppress: To put down or prevent from being seen or known.
* Erase: To remove completely.
* Diminish: To make smaller or less important.
Specific Antonyms:
* Deface: To damage or spoil the surface of something, especially by writing or drawing on it. (Opposite to "emblazon" meaning "to decorate")
* Downplay: To make something seem less important or significant. (Opposite to "emblazon" meaning "to emphasize")
* Undecorate: To remove decorations from something. (Opposite to "emblazon" meaning "to decorate")
Example:
* Emblazon: The knight's shield was emblazoned with his family crest.
* Antonym: The graffiti artist tried to deface the monument by covering it with spray paint.
Ultimately, the best antonym for "emblazon" will depend on the specific meaning of the word in the sentence.