unobtrusive
adjective/ˌʌnəbˈtruːsɪv/
/ˌʌnəbˈtruːsɪv/
(formal, often approving)- not attracting unnecessary attention
- The service at the hotel is efficient and unobtrusive.
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unobtrusive
Definition of unobtrusive adjective from the Oxford Advanced Learner's Dictionary