had been chagrining

• 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 chagrin.
  chagrin

  noun

  a feeling of vexation, marked by disappointment or humiliation.

Related Words

• annoy
• disconcert
• displease
• dissatisfy
• irk
• irritate
• mortify
• peeve
• perturb
• vex