from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective informal Attempting to include too wide a
varietyof things, typically with a result that is less functionalthan intended.
- adjective Of or pertaining to the kitchen sink drama; depicting social realities in an unstylized and direct manner.
from Wiktionary, Creative Commons Attribution/Share-Alike License
From kitchen sink + -y. Sense 1 alludes to the phrase everything but the kitchen sink, sense 2 to the phrase kitchen sink realism.
It was a gutsy and classy call, given that Moore has been rather, well, kitchen-sinky, against her.