Here are some sentences using "unfavorable":
* The weather forecast is unfavorable for our picnic tomorrow.
* The judge's ruling was unfavorable to the defendant.
* The company's financial performance has been unfavorable in recent months.
* Despite unfavorable conditions, the team managed to win the game.
* The doctor's diagnosis was unfavorable, but we're hopeful for a positive outcome.
If you meant to use a different word, please provide more context so I can help you craft better sentences!