mannerly

From Middle English manerly, equivalent to manner +‎ -ly.

• (Canada) IPA^(key): /ˈmænəɹli/
• (New Zealand) IPA^(key): /ˈmɛnɘliː/

mannerly (comparative more mannerly, superlative most mannerly)

1. Polite, having good manners.
   • c. 1590–1591 (date written), William Shakespeare, “The Two Gentlemen of Verona”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, (please specify the act number in uppercase Roman numerals, and the scene number in lowercase Roman numerals):

     Lucetta, as thou lov'st me, let me have / What thou think'st meet, and is most mannerly.

   • 1861, Charlotte Yonge, The Young Step-Mother

     ...but Genevieve's laugh roused her again, partly because she thought it less mannerly than accorded with the girl's usual politeness.

• mannerliness

mannerly (comparative more mannerly, superlative most mannerly)

1. Politely; with good manners.