They add grace to manners perhaps (9)

I believe the answer is:

ornaments

I'm a little stuck... Click here to teach me more about this clue!

'they add grace' is the definition.
The definition suggests an adverb but the answer is not.

'to manners perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'to'+'manners'='tomanners'
'tomanners' anagrammed gives 'ORNAMENTS'.

Can you help me to learn more?

(Other definitions for ornaments that I've seen before include "Decorates" , "Decorations, embellishments" , "Tree embellishments" , "Tree baubles" , "Adornments, decorations" .)

I've seen this clue in The Globe and Mail.

Want a hint initially instead of a full solution? Install my app