I'm working on a humorous project in which one character is called the Outspoken Mime.
The adjective "outspoken" means the mime in question is "free, bold, or unreserved in speech." On one side, this describes the mime as gregarious, talkative, and friendly — while visually implying the mime literally speaks out, making the character a walking oxymoron.
Is there an antonym to "outspoken" that could imply the opposite double meaning? Something to suggest a different mime is shy or reclusive, while visually appearing to (redundantly) claim they do not talk?