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
Laila (1)	LAY-lə (English), LIE-lə (English)	Arabic, English
Judite	zhoo-DEE-tə (Portuguese), zhoo-JEE-chə (Brazilian Portuguese)	Portuguese
Kurt	KUWRT (German), KURT (English)	German, English
Pilirani	pil-ee-RAH-nee	Southern African, Chewa
Fedelmid	-	Ancient Irish, Irish Mythology
Boele	-	Dutch