We came up with quite a few simple word pairs, such as cat/bat; rate/date; purr/pure. But the game made me wonder about longer word pairs and how the one-letter difference changed the meanings in interesting ways.
After several searches through online dictionaries, Scrabble dictionaries, blogs, and an article from Word Ways: The Journal of Recreational Linguistics,* here is a list of such words.
• Accent /accept
• Hiss/ kiss
• Installation/ instillation
• Land/ laud