monologuize

verb

1. To give a monologue; to soliloquize.“He kept the ball always going, but did not monologuize, except when he was appealed to as a judge, and then did it with a mellow grace that no man can learn without Natures aid.”
2. To make into a monologue.“On the phenomenic level, of course, a dialogue can "monologuize" itself in the same way that a monologue can acquire features of "latent dialogue," etc. (see J. Mukafovsky, 1940a: 146-153);”