verb
    
    /ˈsɪŋk/  sinks; sank /ˈsæŋk/ or sunk /ˈsʌŋk/; sunk; sinking
    
    [no obj] :to go down below the surface of water, mud, etc.
    
    
    
    
    
    
    
    
    
    
    
    [+ obj] :to cause (a ship or boat) to go down below the surface of water
    
    
    
    [no obj] :to move down to a lower position
    
    
    
    
    
    
    
    [no obj] :to become lower in amount, value, etc. :to decline or decrease
    
    
    
    
    
    
    
    
    
    
    
    [+ obj] :to use force to cause (something) to go into the ground or another surface - often + into
    
    
    
    
    
    
    
    
    
    [no obj]
    
    to do something that is morally wrong
    
    
    
    
    
    to begin to feel sad, depressed, etc.
    
    
    
    
    
    
    
    
    
    to go or change to a worse or less active state - often + into
    
    
    
    
    
    [no obj] of a person's voice :to become quieter
    
    
    
    [no obj] :to become less successful :to move toward failure
    
    
    
    [+ obj] :to cause (someone or something) to fail
    
    
    
    
    
    [+ obj] :to make (a well, shaft, mine, etc.) by digging down into the earth
    
    
    
    [+ obj] :to spend (a lot of money, work, time, etc.) on something - + in or into
    
    
    
    
    
    
    
    [+ obj] :to throw, hit, or roll (a ball) into a hole or basket
    
    
    
    
    
    
    
    [+ obj] chiefly Brit informal :to drink (something) completely
    
    
    
    sink in
    
    [phrasal verb]
    
    to become completely known, felt, or understood
    
    
    
    
    
    sink like a stone
    
    to sink very suddenly and quickly
    
    
    
    
    
    sink or swim
    
    A situation in which you either sink or swim is one in which you must succeed by your own efforts or fail completely.
    
    
    
    
    
    sink without a trace
    
    US or Brit sink without trace
    
    to sink beneath the water to a place that cannot be seen or found
    
    
    
    
    
    sink your teeth into
    
    
    
    noun
    
    plural sinks
    
    [count] :a wide bowl that has a faucet for water and a drain at the bottom and is usually positioned in a counter or on a pedestal