Adverb
In a due, fit, or becoming manner; as it (anything) ought to be; properly; regularly.
Source: Webster's dictionarySo long as men worship the Caesars and Napoleons, Caesars and Napoleons will duly rise and make them miserable. Aldous Huxley
Where an excess of power prevails, property of no sort is duly respected. No man is safe in his opinions, his person, his faculties, or his possessions. James Madison
Beauty is produced by the pleasing appearance and good taste of the whole, and by the dimensions of all the parts being duly proportioned to each other. Vitruvius
THE GENIUS of the industrial system lies in its organized use of capital and technology. This is made possible, as we have duly seen, by extensively replacing the market with planning. John Kenneth Galbraith
Men speak of natural rights, but I challenge any one to show where in nature any rights existed or were recognized until there was established for their declaration and protection a duly promulgated body of corresponding laws. Calvin Coolidge
Vexations, duly borne, Are but as trials, which heaven's love to man Sends for his good. Italian Proverb