had concertinaed

• past perfect

  past perfect

  Used to express a completed action that took place before another specific past action occurred.

  of concertina.
  concertina

  noun

  a musical instrument resembling an accordion but having buttonlike keys, hexagonal bellows and ends, and a more limited range.

More Suggestions

• concerned
• concertante
• concerted
• concertino
• concertize
• disconcerted
• disconcerting
• half-concealed
• ill-conceived