had been glimmering

• 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 glimmer.
  glimmer

  noun

  a faint or unsteady light; gleam.

Related Words

• flicker
• gleam
• glint
• glow
• hint
• inkling
• ray
• twinkle