全然【ぜんぜん】
(not) at all, (not) in the slightest, wholly, entirely, completely, totally, extremely, very
当然【とうぜん】
natural, right, proper, just, reasonable, appropriate, deserved, naturally, as a matter of course, rightly, deservedly, justly, of course
突然【とつぜん】
abrupt, sudden, unexpected
自然【しぜん】
nature, natural, spontaneous, automatic, naturally, spontaneously, automatically
偶然【ぐうぜん】
coincidence, chance, accident, fortuity, by chance, unexpectedly, accidentally, contingency
自然【じねん】
occurring naturally (without human influence)
同然【どうぜん】
just like, (virtually) no different from, (almost) the same as, as good as (e.g. dead, settled)
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
天然ガス【てんねんガス】
natural gas
天然記念物【てんねんきねんぶつ】
natural monument, protected species (animal, habitat, etc.)
騒然【そうぜん】
noisy, confused, uproarious
未然【みぜん】
before it happens, previously
自然界【しぜんかい】
nature, the natural world, realm of nature
公然【こうぜん】
open, public, official, overt
大自然【だいしぜん】
nature, Mother Nature
必然的【ひつぜんてき】
inevitable, necessary
自然科学【しぜんかがく】
natural science
必然【ひつぜん】
inevitable, necessary, certain, sure, inevitability, necessity
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
