I suppose it depends on the dictionary in use.  
 
caesious
Of the color of lavender; pale blue with a slight mixture of gray.  
 
arsenious
Of or containing arsenic, especially with valence 3.  
 
abstemious
1. Eating and drinking in moderation.
2.  
a. Sparingly used or consumed: abstemious meals.
b. Restricted to bare necessities: an abstemious way of life.
 
abstentious
self-restraining; not indulging an appetite especially for food or drink; not totally abstinent but abstemious

Dave:
 
You came up with all those in under 15 minutes?  WOW!  I'm impressed!
 
Bill, tgo

Well it wasn't like I was sitting here thinking them up off the top of my head.   The computer did all the work.  I've never used or even heard any of those words before.

everyone's a critic!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11
ok
so shoot the teacher who told me
iilii

Ive seen 5 or 6 Irwins (in pics) and all of them did have the eagle on the headstock. The neck does look like something he would do though and the rest of the guitar is pretty dang interesting. Cant say whether or not its and Irwin, but its a really interesting piece either way. I like it.

I brought the guitar in to my luthier, Gary Brawer, yesterday.  As many of you know, Gary worked on Jerry Garcia's guitars, including the Irwins.  He checked it out and thought it was very possibly an Irwin as the construction and decoration was consistent with Irwin's work.  He also agreed that, even if it isn't an Irwin, it is a very cool guitar that is easily worth the $ I paid.  So anyone out there have Irwin's phone number?
 
Bill, tgo

Bill,  
 
The image of your guitar is stuck in my head, therefore it must be an Irwin.  
 
Congratulations

phylo,  
 ...like a good contact high from an old guitar, holding vibrations from past playing,  
 or maybe the neck is soaked  in   Dmso ,
 and  other   illicit     LetterS .  .   .
 
Some mojo.
 
congrats bill

Bill,
Acme guitars in St Louis had an Irwin for several years in the early 90's.  I played it several times.  It had similar appointments as the guitar in your photo.  Also, it did not have an eagle inlay.  As I remember, the price was about $3000.  
My guess is that the guitar in your photo is a Irwin
That is an amazing looking guitar.