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
Eustathios	-	Ancient Greek
Sanjeev	-	Indian, Hindi, Marathi, Gujarati, Punjabi, Telugu, Kannada
Gideon	GID-ee-ən (English)	Biblical, English, Hebrew
Galal	-	Arabic
Jeannette	[dʒi'net]
Yermolai	-	Russian