Stinker
noun
A person who stinks.
A contemptible person.
“I won't date Mary Jane again. I thought she was a stinker to leave before the end of the movie.”
Something difficult (e.g. a given puzzle) or unpleasant (e.g. negative review, nasty letter).
“Today's crossword is a stinker.”
Synonyms: creep, rotter, scoundrel, stinkard, stinkard, hatchet job, nastygram, clunker