1) 平ひらたい #16,248 Inflections of 平たい Class I-adjective Stem Inflected ending ✕ Link copied! Common ひらたい [0] ひらたい [3] Meaning Shirabe ① I-adjective flat; even; level 古代人こだいにんたちは地球ちきゅうは平ひらたいと信しんじていた。 The ancients believed the earth was flat. ② I-adjective plain (language, words, etc.); simple usu. as 平たく言えば, 平たく言うと, etc. See also: 平たく言えば (ひらたくいえば) Kanji 平 ヘイ even, flat, peace Forms 平たい#16,248平ひらたい扁たい#392,701扁ひらたいひらたいひらたい