思う存分
1
to one's heart's content;to one's complete satisfaction;as much as one likes;heartily;thoroughly;without restraint;to the full
その独裁者は思う存分特権を乱用した。
The dictator abused his privileges to his heart's content.
Other forms
思うぞんぶん 【おもうぞんぶん】 (search-only kanji form)