Noun
1. a descent as through liquid (especially through water);
"they still talk about the sinking of the Titanic"2. a slow fall or decline (as for lack of strength);
"after several hours of sinking an unexpected rally rescued the market""he could not control the sinking of his legs"3. a feeling caused by uneasiness or apprehension;
"with a sinking heart""a sinking feeling in the pit of my stomach"