COURTEOUSLY

politely, courteously

(adverb) in a polite manner; “the policeman answered politely, ‘Now look here, lady...’”

Source: WordNet® 3.1

Etymology

Adverb

courteously (comparative more courteously, superlative most courteously)

In a courteous manner; with obliging civility or condescension; politely.

Source: Wiktionary

Cour"te*ous*ly, adv.

Definition: In a courteous manner.

COURTEOUS

Cour"te*ous (kr"t-s; 277), a. Etym: [OE. cortais, corteis, cortois, rarely corteous, OF. corties, corteis, F. courtois. See Court.]

Definition: Of courtlike manners; pertaining to, or exxpressive of, courtesy; characterized by courtesy; civil; obliging; well bred; polite; affable; complaisant. A patient and courteous bearing. Prescott. His behavior toward his people is grave and courteous. Fuller.

Source: Webster’s Unabridged Dictionary 1913 Edition