flat-earthery

derogatory uncountable

(derogatory, somewhat occasional) Advocacy for the belief that the earth is flat.

Japanese Meaning

（軽蔑的な用語）平面地球説、つまり地球が平らであるとする考えを支持・擁護する行為や信念

He dismissed her arguments as nothing more than flat-earthery, unworthy of serious consideration.

彼は彼女の議論を、真剣に考慮するに値しない単なる地球平面説の擁護だと切り捨てた。

Sense（1）

(derogatory, somewhat occasional) Advocacy for the belief that the earth is flat.