if not

if that is not [the case]; if that is not so. If not cleaned, the clock will stop running. He should be here at noon. If not, we will eat without him.

Common Names:

Name	Pronounced	Usage
Beatus	-	Late Roman
Atherfold	['æθəfəuld]
Karin	['ka:rin]
Mercury	MURK-yə-ree (English)	Roman Mythology (Anglicized)
Deion	-	African American (Modern)
Filippu	-	Old Church Slavic