ナチュラル (nachuraru) means “natural”

More examples

その台詞は、感情を込めすぎないほうがナチュラルです。so no serifu wa kan jō o ko me su gi na i hō ga na chu ra ru de su

That line sounds more natural when you do not put too much emotion into it.

Describes something that feels unforced and true to its nature rather than carefully made or acted.

自然shizen: Describes a quality that fits its nature or surroundings without seeming artificial.

飾り気や無理がなく、自然で本物らしいさま。kaza ri ke ya mu ri ga na ku shi zen de hon mono ra shi i sa ma

Japanese ナチュラル (nachuraru) is borrowed from English natural, which traces back through French naturel to Latin naturalis, "of nature."

In Japanese, ナチュラル (nachuraru) can describe acting, appearance, speech, or behavior that seems unforced rather than merely something found in nature.