British vs American Spellings in Five-Letter Lists
TL;DR: US/UK spelling rarely splits a five-letter middle-I pair the way COLOR/COLOUR does (those are 5 vs 6). More often one side is in the file and the other is a longer cousin, or both are identical (DAISY). Pick the lexicon your game uses. Do not “translate” a five-letter US word into a six-letter UK…