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to whisper; to murmur
to rumor; to rumour
彼女は耳元で秘密を私語いた。
She whispered a secret into my ear.
授業中に隣の人と私語いていて注意された。
I was scolded for whispering with the person next to me during class.
風が木の葉を揺らして私語くようだった。
The wind rustled the leaves as if whispering.