Quick answer
外 is the kanji for "Other / Outside / Foreign". A common reading is そと (soto). You can practice writing it on this page.
Meaning
Other / Outside / Foreign
Also : Other · Outside · Foreign · Exterior
Readings
kun = Japanese reading · on = Chinese reading
Practice writing
Trace the kanji stroke by stroke with a visual guide.
Memory Aid
A moon crescent with a divining rod below — when you step outside at night the crescent moon is visible. The elements show outside conditions.
そと (soto) sounds like "sotto" — keeping something sotto voce (whispered) outside, away from the inside.
Example Sentences
外は寒いです。
そとはさむいです。
It's cold outside.
外国人の友達がいます。
がいこくじんのともだちがいます。
I have a foreign friend.
Vocabulary using 外
Learn 外 with Spaced Repetition
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