Hi. I worked quite a lot on the dictionary part when designing the game. What I came up with was to only use common nouns, like "river," verbs, like "dance," or adjectives, like "bright." Also all words are in their base or dictionary forms, like "happy" instead of "happier".
I agree - I will add a mute/unmute option. Right now the results are only shown for registered players. Given that most people do not sign up, then I think it would make sense to make a scoreboard for all players.