complex; intricate; complicated; confused; troublesome; vexatious; cumbersome
パスポートの更新手続きは煩雑で、時間がかかった。
The passport renewal process was complicated and took a long time.
システムが煩雑になった。
The system became complicated.
この計算は煩雑で、ミスが多かった。
These calculations are complicated, and there were many errors.