I got drunk and discarded my house-KEY. Now my wife makes me sleep in the yard.
If you can deal with the fact that the brush radical is tilted sideways, then have I got a mnemonic for you!
I killed the cow with a fork, and discarded the decapitated cow-head in a tree. No one will think to look for it there!
renounce, resign, "I don't sell that shit no more, dude."
dispose of - usually used of specialized garbage: medical waste or nuclear boogers or whatever.
禁止 廃止 発禁 廃棄 駆逐 追放