Some enemies or bosses are using 3+4 Letter Immunity. It is because they are too strong to attack, so the short words are not so good to attack. Bosses uses this advantage to prove to Lex they are strong.
Enemies uses 3+4 letter immunity
- Professor Codex (Final Boss)
- Gluttonous Monk (only if he raised his shield)
- Lady Summer-Speak (Adventure Mode and Adventure Replay only)
- Phase 3 (Final Boss)