Lowbie--A 'lowbie' is someone who is not low enough level to be
considered a newbie, but not high enough level to be considered a
midbie or highbie.  They're the bourgeoisie of a MUD and usually
have the hardest time since they know enough to know what they're
missing but don't have the power to get what they want easily.

You usually spend the first few levels past level 20 as a lowbie,
as you attempt to consolidate your skills and equipment. You're out
of the rank and file of newbiedom, but it's still a hard way before
you can get anywhere.