Denshi Jisho — Online Japanese dictionary

さあ come; come now
Common word, Conjunction, Interjection 
然有り さあ it is so; it is as such
Expression, Archaism 
さあさあ come; come now
Interjection 
さあっと 1: relatively quickly (esp. actions);
2: quite suddenly (esp. wind, rain, etc.)
Noun 
然あらぬ さあらぬ casual; indifferent; nonchalant
Pre-noun adjectival, Usually written using kana alone 
然有らぬ さあらぬ casual; indifferent; nonchalant
Pre-noun adjectival, Usually written using kana alone 
然有らぬ体で さあらぬていで with a nonchalant air
Expression 

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