>>309
Hi! me again!
I think you can use the English word " high" as it is because some basic English words are used in Japanese language.
"High" is pronounced "hai"(ハイ) in Japanese.
For example, マリファナを吸ってハイ（な気分）になる。
When I looked up "stoned" in my English-Japanese dictionary, I found two Japanese adjective "酔った”（yotta),”うっとりした"（uttorisita) for it.

I don't know much about grammatical things, but "being high" is called gerund, isn't it?
So a noun "恍惚”(koukotsu),which is a bit difficult word, seems to be more suitable for your question.

Sorry for my poor English!