was countersigning

• past progressive

  past progressive

  Used to describe an ongoing action or continuous state that was happening at a specific time in the past.

  of countersign.
  countersign

  noun

  a sign used in reply to another sign.

More Suggestions

• countersign
• countersink
• counterstain
• undesigning
• counter-ion
• counterlight
• countermine
• counterrotating
• countersignature