平ら: flat, even, level, smooth, having no variation in altitude

平: a male given name / 平: a surname

太平:

neglect / laziness

(phonology, orthography, grammar) the first row of the 五十音図 (literally “table of the fifty sounds”), consisting of the five kana あ/ア (a), い/イ (i), う/ウ (u), え/エ (e) and お/オ (o)

(phonology, orthography, grammar) the sixth row of the 五十音図 (literally “table of the fifty sounds”), consisting of the five kana は/ハ (ha), ひ/ヒ (hi), ふ/フ (fu), へ/ヘ (he) and ほ/ホ (ho)

(phonology, orthography, grammar) the eighth row of the 五十音図 (literally “table of the fifty sounds”), consisting of the five kana や/ヤ (ya), い/イ (i) (alternatively, 𛀆/𛄠 (yi)), ゆ/ユ (yu), え/エ (e) (alternatively, 𛀁/𛄡 (ye)) and よ/ヨ (yo), two of which are taken from the あ行 (“a-row”) to represent classical grammatical inflection in modern text

(phonology, orthography, grammar) the tenth and last row of the 五十音図 (literally “table of the fifty sounds”), consisting of the five kana わ/ワ (wa), ゐ/ヰ (wi), う/ウ (u) (alternatively, 𛄟/𛄢 (wu)), ゑ/ヱ (we) and を/ヲ (wo), one of which is taken from the あ行 (“a-row”) to represent classical grammatical inflection in modern text

(phonology, orthography, grammar) a row derived from the は行 (“ha-row”) of the 五十音図 (literally “table of the fifty sounds”) (but not included in the table) by adding the diacritical mark ゛, consisting of the five kana ば/バ (ba), び/ビ (bi), ぶ/ブ (bu), べ/ベ (be) and ぼ/ボ (bo)

(phonology, orthography, grammar) the third row of the 五十音図 (literally “table of the fifty sounds”), consisting of the five kana さ/サ (sa), し/シ (shi), す/ス (su), せ/セ (se) and そ/ソ (so)