Dignified is a related term of mannerly.
As adjectives the difference between dignified and mannerly
is that dignified
is respectable while mannerly
is polite, having good manners.
As a verb dignified
polite, having good manners
* 1593, William Shakespeare, Two Gentlemen of Verona
* 1861, Charlotte Yonge, The Young Step-Mother
- Lucetta, as thou lov'st me, let me have / What thou think'st meet, and is most mannerly .
- ...but Genevieve's laugh roused her again, partly because she thought it less mannerly than accorded with the girl's usual politeness.