had been uncoiling

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of uncoil.
  uncoil

  verb (used with or without object)

  to unwind from a coiled position.

Related Words

• circulate
• cover
• develop
• disperse
• escalate
• expand
• extend
• flow
• increase
• lay
• multiply
• proliferate
• reach
• set
• spray
• stretch