has been congealing

• present perfect progressive

  present perfect progressive

  Used to describe an action that began in the past, has continued continuously, and is still in progress.

  of congeal (3rd person singular).
  congeal

  verb (used with or without object)

  to change from a soft or fluid state to a rigid or solid state, as by cooling or freezing.

Related Words

• curdle
• thicken