The majority of the participants were women.
仕事の大半はもう終わった。
Most of the work is already done.
Adverbial use indicating that something is true for the most part. Can be used without a particle.
その問題は大半解決した。
The problem has mostly been resolved.
彼の話は大半が作り話だ。
Most of his story is made up.
Overseas operations make up the majority of this company's sales.
He spent most of his life abroad.
The majority of the participants were beginners.
The content of that report was, for the most part, accurate.