Magnificent; grand; of great scale or splendor—used to describe landscapes, plans, stories, etc. Often used as '壮大な〜'.
彼は壮大な計画を立てたが、実行には時間がかかる。
He made a grand plan, but it will take time to carry out.
あの山頂からの眺めは壮大で、息をのむほどだった。
The view from that mountain summit was magnificent and breathtaking.
映画は壮大なスケールで描かれており、映像が印象的だ。
The film is depicted on a grand scale and its visuals are impressive.