Secretly:”kossori” Japanese Phrase #287

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Yuka

こっそり is one of those expressive Japanese adverbs that perfectly captures doing something sneakily. Let’s learn it!

JapaneseReadingMeaning
こっそりkossorisecretly / stealthily / on the sly
こっそりとkossori tosame meaning (slightly more formal with と)
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What Does こっそり Mean?

こっそり is an adverb describing doing something quietly, secretly, or without others noticing. It often has a playful or sneaky connotation:

  • こっそりお菓子を食べた。 — I secretly ate the snacks.
  • 彼女はこっそり部屋を出た。 — She quietly snuck out of the room.
  • こっそり練習していたんだ。 — I was secretly practicing.

Usage Notes

こっそり is used before a verb, like most Japanese adverbs:

  • こっそり + verb: こっそり見る (peek secretly), こっそり渡す (secretly pass something)

It can also describe something done for a positive reason — like secretly practicing a surprise:

  • 誕生日プレゼントをこっそり準備した。 — I secretly prepared a birthday present.
Rei

Is こっそり always negative — like hiding something bad?

Yuka

Not at all! It’s neutral — secretly practicing, secretly planning a surprise, quietly leaving without disturbing others. Context determines if it’s good or bad.

Related Vocabulary

WordReadingMeaning
こっそりkossorisecretly / stealthily
ひそかにhisoka nisecretly / quietly (more literary)
内緒でnaisho dein secret / without telling
こっそり話すkossori hanasuto whisper / talk in secret

Quick Quiz

Fill in the blank: “He secretly left the party early.”

Answer: 彼はパーティーをこっそり抜け出した。

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