自然【しぜん】
nature, natural, spontaneous, automatic, naturally, spontaneously, automatically
当然【とうぜん】
natural, right, proper, just, reasonable, appropriate, deserved, naturally, as a matter of course, rightly, deservedly, justly, of course
依然【いぜん】
still, as yet, as it has been
依然として【いぜんとして】
still, as yet, as of old
突然【とつぜん】
abrupt, sudden, unexpected
天然【てんねん】
nature, spontaneity, natural airhead
不自然【ふしぜん】
unnatural, artificial, affected, strained
偶然【ぐうぜん】
coincidence, chance, accident, fortuity, by chance, unexpectedly, accidentally, contingency
未然【みぜん】
before it happens, previously
全然【ぜんぜん】
(not) at all, (not) in the slightest, wholly, entirely, completely, totally, extremely, very
騒然【そうぜん】
noisy, confused, uproarious
公然【こうぜん】
open, public, official, overt
必然的【ひつぜんてき】
inevitable, necessary
断然【だんぜん】
firmly, flatly, resolutely, decisively, absolutely, definitely, definitely (wrong, different, etc.), absolutely, by far, far and away, by a long shot, hands down
自然科学【しぜんかがく】
natural science
必然【ひつぜん】
inevitable, necessary, certain, sure, inevitability, necessity
漠然【ばくぜん】
vague, obscure, indistinct, hazy, ambiguous
歴然【れきぜん】
evident, plain, distinct, clear
敢然【かんぜん】
boldly, bravely, resolutely, determinedly
天然痘【てんねんとう】
smallpox, variola