had been invigorating

• 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 invigorate.
  invigorate

  verb (used with object)

  to give vigor to; fill with life and energy; energize.

Related Words

• energize
• enliven
• excite
• galvanize
• quicken
• reinforce
• rejuvenate
• restore
• revitalize
• strengthen
• vitalize