This field describes the impact of a bug. The submitter of the bug should consider carefully their view of the bug severity, i.e. the impact to them as the end user.

 Blocker - Blocks development and/or testing work
Critical - crashes, loss of data, severe memory leak
Major - major loss of function

Normal - Minor loss of function.Unfriendly behavior that is hindering, but workable, for the user or service
Minor - Minor loss of function.Unfriendly behavior that is merely annoying to the user
Trivial - cosmetic problem like misspelled words or misaligned text
Enhancement - Request for enhancement

Note : The default severity is Normal.