7 letters · 12 points in Scrabble
noun a descent as through liquid (especially through water)
noun a slow fall or decline (as for lack of strength)
noun a feeling caused by uneasiness or apprehension
originEtymology tree English sink Proto-Germanic *-ungō Old English -ung Middle English -ynge English -ing English sinking From sink + -ing.
Etymology from Wiktionary, CC BY-SA 3.0