This is the 2613th most frequent Japanese word.
投じ
"投じ" means "to throw, cast, or devote."
The word '投じた' here means 'devoted', showcasing how one dedicates resources like time and effort towards something.
彼は時間と労力をプロジェクトに投じた。
He devoted his time and effort to the project.
In this instance, '投じた' is used to mean 'invested', indicating the allocation of resources like money or effort into a venture.
彼女は思い切って新しい事業に投じた。
She boldly invested in a new venture.
Here, '投じた' denotes 'gave their all', signifying a complete involvement or dedication to an activity or goal.