By Chance
Unexpectedly, Coincidence
adverb, noun, な adjective, の adjective
ぐうぜん
意外 (いがい) Unexpected, Surprising
案外 (あんがい) Unexpectedly, More Than Expected
偶然 (ぐうぜん) By Chance, Unexpectedly, Coincidence
唐突 (とうとつ) Abrupt, Unexpected, Sudden
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