It's going to be extremely hard...

its possible but you will be missing key essential amino acids that your body needs in order to not only build muscle but to live.

I think your question is, "can I build muscle on a vegetarian diet" and the answer is yes but you cant eat the minimal amount of protein from weak sources. There are plenty of good sources of protein from non meat or dairy products. You should also look into protein supplements with no dairy like NO Whey from Official AI Sports Nutrition.

I have seen vegan body builders so yes you can sir.

I was a vegetarian for a year and worked out the whole time. I never actually went up a whole lot in strength but I definitely leaned out. I later decided I had to have my meat.

good info

yes