na-adjective, noun which may take the genitive case particle 'no', noun
Used as a noun or adjectival noun to describe the highest quality, most suitable, or most excellent thing or state. Common in phrases like ベストを尽くす (do one's best) and ベストな選択 (the best choice).
This is my best work.
ベストを尽くしたので後悔はない。
I did my best, so I have no regrets.
Right now, the best thing to do is wait quietly.
I think this is the best choice given the situation.
For people with sensitive skin, this lotion is the best option.
greatest hits album; best-of album