Adverb

(en adverb)

In accordance with what is right or just; fairly.

* The only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others. His own good, either physical or moral, is not sufficient warrant. -- John Stuart Mill

Rightly, correctly.

* 1590 , Edmund Spenser, The Faerie Queene , II.viii:

Ne euer will it breake, ne euer bend. / Wherefore Morddure it rightfully is hight.

Adverb

(en adverb)

In a due, fit, or becoming manner; as it ought to be; properly.

The citizen's concern was duly noted in the meeting minutes.

* {{quote-news

, year=2011 , date=October 29 , author=Phil McNulty , title=Chelsea 3 - 5 Arsenal , work=BBC Sport citation , page= , passage=Walcott's display deserved a goal and it duly arrived after 55 minutes. As he had done throughout, the forward ran straight at Chelsea's defence, riding two challenges and even falling before firing an emphatic shot past Cech.}}

Regularly; at the proper time.

* {{quote-book, year=1907, author=

, title=The Dust of Conflict , chapter=4 citation , passage=The inquest on keeper Davidson was duly held, and at the commencement seemed likely to cause Tony Palliser less anxiety than he had expected.}}