Perfect; complete and flawless — having no defects or shortcomings.
彼女の発表は準備が行き届いており、完璧だった。
Her presentation was thoroughly prepared and perfect.
完璧を目指すのは良いが、時には妥協も必要だ。
It's good to aim for perfection, but sometimes compromise is necessary.
彼の日本語は完璧だと皆に言われている。
Everyone says his Japanese is perfect.