Definitions:

1. Often referring to a situation, event, or product that is disappointing or of low standard. NOUN
   • The movie was a real stinker, and we left halfway through.
2. Refers to an objectionable odor or something that emits a strong unpleasant smell. NOUN
   • The fish left in the fridge for too long is starting to smell like a real stinker.
3. Someone who causes trouble or is disliked for their actions or attitude. NOUN
   • He can be a real stinker when he doesn't get his way.

Synonyms:

• lemon
• louse
• rotter
• skunk
• stinkpot