Sadly no, once the item has been deleted you can't restore it, you need to get it again from item drop, or crafting.
Sorry for such a short answer. No, you may not.
As of 27/04/2012 there are 540 items in team Fortress 2.
You can't delete them.
rightclick it and choose delete.
1. How do I delete an item from the Office Clipboard? How do I delete all the items from the Office Clipboard?
You can't but advertisement items automatically delete after a certain amount of time.
You can't delete items from your igloo inventory. If you want to delete something that's in your igloo, drag it to the corner.
You don't. Items created in the Workshop for Team Fortress 2 are added as either random drops in-game or as purchasable items in the Mann Co. store.
Yes, as long as you are in-game, you are able to find items.
no you cannot delete them but if you want to get rid of the loot items, you can send them to your mafia family members.
Valve items are primarily only given to Valve Staff, although these items can be traded, it is very rare that they are.
Well unfortunately there is no way to delete clothing items...