The New Century Standard Letter-Writer / Business, Family and Social Correspondence, Love-Letters, Etiquette, Synonyms, Legal Forms, Etc.

by Alfred B. Chambers

quid pro quo, tit for tat.

qui-vive, on the alert.

rencontre, a meeting.

régime, system.

sine quâ non, an absolute condition.

sang-froid, self-possession.

savoir-faire, clever ways.

savoir-vivre, tactful manners.

sans cérémonie, informally.

soirée, evening party.