unobtrusively
🇺🇸
/ˌʌnəbˈtruːsɪvli/
🇬🇧
/ˌʌnəbˈtruːsɪvli/
in a way that does not draw attention to oneself
She unobtrusively placed the book on the shelf.
彼女は目立たずに本を棚に置いた。