Word to describe that only one side of the party is talking?
Example sentences:
Susan didn't enjoy the date, because it was too __.
Mary's marriage has become __. She's the only one speaking.
Solution 1:
"One-sided" is common usage and would work in both of your examples; however, its usage is broader than just about conversations -- though it is often used to modify 'conversation' (see many results for 'one-sided conversation' google search, or http://www.basicinstructions.net/basic-instructions/2009/4/29/how-to-end-a-one-sided-conversation.html).
If you wanted to avoid usage of one-sided, your options for a one-word solution might be limited or awkward. There are some idioms for what you describe, such as:
- She dominated the conversation
- He monopolized the conversation
You may also consider use of the word "monologue," which has the usage "a prolonged talk or discourse by a single speaker, especially one dominating or monopolizing a conversation" (http://www.dictionary.com/browse/monologue).
Solution 2:
One could say that the conversation was lopsided:
Lopsided:
ADJECTIVE
1 With one side lower or smaller than the other.
‘a lopsided grin’
1.1 Disproportionately weighted in favor of one side over another.
‘a lopsided competition’
https://en.oxforddictionaries.com/definition/us/lopsided
If it suits, you might also explore concepts such as unbalanced or uneven.