WordReference English-Japanese Dictionary © 2020:
|a great deal of effort,|
a good deal of effort nnoun: Refers to person, place, thing, quality, etc.
| (a lot of work)||かなりの［大変な・多大な］努力 名品詞-名詞: 人、もの、場所、時間、概念などを表す語|
| ||I put a great deal of effort into this project, and I was really offended when management ignored it.|