One who stinks. / (slang) A contemptible person or thing. / (slang) Something difficult (e.g. a given puzzle) or unpleasant (e.g. negative review, nasty letter).

plural of stinker

(informal) Something bad, contemptible or of otherwise low quality.

plural of stinkeroo

(slang) The state or sphere of stinkers; contemptible behaviour.