Past tense of 'sink'; to descend or go down below the surface, especially of water, or to decline in value or health.
From Old English 'sincan' meaning 'to sink down,' related to German 'sinken,' from Proto-Germanic root meaning 'to submerge or fall.'
The Titanic sank, your heart sinks when you're sad, and your savings sink if you make bad choices—English reuses this one word to describe everything that goes down, from physical objects to emotions and finances.
Complete word intelligence in one call. Free tier — 50 lookups/day.