There are multiple origins and translations for the name Arkady:
1. East Slavic (Russian Аркадий) form of the ancient Greek name Arkadios/Arcadius semantics - "of place Arkadia (mountain area located in the Peloponnese in Greece, country of happy people)", means - "happy shepherd", see the name Arkadiy.
2. Late Greek (αρκούδα) [arkoúda] from ancient Greek (ἄρκτος) [arktos] denotation - "bear".
3. Derived from the Turkish (Turkic) (arkadaş) interpretation - "friend, companion, fellow".