N3 - 偶然ぐうぜん
(by) chance, unexpectedly, suddenly
N3 - 自然しぜん
nature, spontaneous
N3 - 全然ぜんぜん
(1) wholly, entirely, completely, (2) not at all (with neg. verb)
N3 - 天然てんねん
nature, spontaneity
N3 - 突然とつぜん
abruptly, suddenly, unexpectedly, all at once
N2 - 自然科学しぜんかがく
natural science
N1 - 公然こうぜん
open (e.g. secret), public, official
N1 - 然しながらしかしながら
nevertheless, however
N1 - 整然せいぜん
orderly, regular, well-organized, trim, accurate
N1 - 断然だんぜん
firmly, absolutely, definitely
N1 - 漠然ばくぜん
obscure, vague, equivocal
N1 - 必然ひつぜん
inevitable, necessary
N1 - 呆然ぼうぜん
dumbfounded, overcome with surprise, in blank amazement