何なん年ねん間かんも

expression

for many years; for years

Emphasizes a long duration, often with a sense of 'for years on end' or 'for so many years'. Used adverbially.

• 彼かれは何なん年ねん間かんも海かい外がいで働はたらいていた。

  He worked abroad for many years.

• 何なん年ねん間かんも会あっていなかった友ゆう人じんと再さい会かいした。

  I reunited with a friend I hadn't seen for years.