Compounds of いっこ

• 言いっこなし
  (exp) let's not say (such things) to each other
• 言いっこ無し
  (exp) let's not say (such things) to each other
• 固いことは言いっこなし
  (exp) let's put formalities aside
  let's not speak so stiffly
• 硬いことは言いっこなし
  (exp) let's put formalities aside
  let's not speak so stiffly
• かたいことは言いっこなし
  (exp) let's put formalities aside
  let's not speak so stiffly