what dictionary does last letter use on roblox

The game’s word list appears to use a custom dictionary for Last Letter, not a single standard Roblox dictionary. Community sources say it draws from multiple references, including Wiktionary and Webster’s Dictionary, and the in-game “dictionary team” seems to control the complete list.

What that means

• It likely accepts a broader set of words than a basic English word list.
• Not every real word will work, because the game may exclude some entries.
• The best match I found is that the library is sourced from several public references, not one official dictionary.

Practical tip

If a word fails, try:

• a more common spelling,
• a simpler synonym,
• or a different word that fits the same starting letter.

The public word library also warns that not all words may be present or work in the game.

TL;DR: Last Letter uses a custom, mixed dictionary list, not one single official dictionary.