on one's honor

Entrusted to behave honorably and honestly without supervision. For example, The students were on their honor not to consult notes during the exam. Originally alluding to a solemn oath, this idiom dates from the mid-1400s.

Common Names:

Name	Pronounced	Usage
Arcangelo	-	Italian
Chayim	-	Hebrew
Euadne	-	Greek Mythology
Amalia	ah-MAH-lee-ah (Dutch, German)	Spanish, Italian, Romanian, Dutch, German, Ancient Germanic (Latinized)
Taffy	-	Welsh
Sawyl	-	Welsh