sour (EN)
прилагательное, глагол

прилагательное “sour”

sour, sourer, sourest or more/most
  1. кислый
    To make foods taste more sour, you can add vinegar.
  2. прокисший
    The milk went sour, so we'll have to throw it away.
  3. неприязненный
    She spoke in a sour tone, making everyone feel unwelcome.
  4. кислый (для почвы)
    The farmer struggled to grow crops on the sour soil in the back field.

глагол “sour”

sour; he sours; past soured, part. soured; ger. souring
  1. испортить (отношения)
    The argument soured their friendship, and they stopped talking to each other.
  2. прокиснуть
    The milk soured after being left out of the fridge overnight.