This is the 2834th most frequent Japanese word.
sa
"Sa" is a Japanese particle used to emphasize or assert a statement, often conveying confidence or urging action.
Here, 'さ' is used at the end of the sentence for emphasis or to convey the speaker's personal sentiment.
人生とは不思議なものさ。
Life is indeed a mysterious thing.
In this usage, 'さ' is added to the sentence to underline certainty or emphasize the statement being made.
彼は中学生のころから天才だったさ。
He has been a genius since he was in junior high school.
In this sentence, 'さ' is used as an interjection to indicate readiness or transition before starting an action.