get a word in edgewise

To speak or express one's opinion despite other people dominating the conversation (hence the image of squeezing words in "edgewise"—sideways). Usually used in negative constructions to convey the opposite. When Mary paused in her monologue, I was finally able to get a word in edgewise about my own weekend! The third-tier candidate couldn't get a word in edgewise at the debate. The date was pretty boring. She just blathered on the whole evening, and I couldn't get a word in edgewise.

not get a word in edgewise

To be unable to speak or make one's opinion known due to one or more people dominating the conversation. The third-tier candidate couldn't get a word in edgewise at the debate. I can never get a word in edgewise when Mary comes to the book club—she just never stops talking.