Is There Dictionary Software for PSP?

No official dictionary app was released for PSP. The platform is discontinued (store closed 2016), and homebrew development has stalled.

Workarounds

• Custom Firmware (CFW) + Homebrew: PSP Dictionary (by various devs) exists on archives like Internet Archive. Requires CFW (6.61 PRO-C2 / ME).
• E-Book Readers: Bookr or PspEbook can load .txt/.epub with built-in word lookup (limited).
• Browser: Use the slow NetFront browser to access dictionary.com or Wiktionary (Wi-Fi required).

Better Alternatives

• Smartphone (offline dictionaries: Dict.cc, GoldenDict, Kiwix + Wiktionary dump).
• Nintendo DS/3DS: Kanji Sonomama Rakubiki Jiten (JP), Merriam-Webster (DSiWare).
• E-reader (Kobo, Kindle) with built-in dictionary.

CFW on PSP carries brick risk and voids any residual warranty. Not recommended for a single app.