Meaning of らたい in Japanese

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Definition of らたい

らたい(ratai) 【裸体】

ぜんらたい(zenratai) 【全裸体】

はんらたい(hanratai) 【半裸体】

ひらたい(hiratai) 【平たい ·扁たい】

(adj-i) flat; even; level; simple
古代人たちは地球は平たいと信じていた。
The ancients believed the earth was flat.
plain (speech, etc.); simple

らたいが(rataiga) 【裸体画】

らたいしゅぎ(rataishugi) 【裸体主義】

If he dies now, the situation will become serious.

My brother usually calls me from Chicago on Tuesday evenings.