1. the quality or state of resembling or containing fish; a fishy smell or taste
Usage: literal sense
2. the quality of being suspicious, questionable, or not trustworthy
Usage: informal

Examples

• The fishiness of the old seafood made it clear we shouldn't eat it.
• There was a strong fishiness in the air near the harbor.
• I detected a fishiness about his explanation that made me skeptical.
• The fishiness of the deal raised red flags for the investors.
• She noticed a fishiness in his behavior that suggested he was hiding something.
• The fishiness of the contract terms worried the lawyer.