extraneous russian
посторо́нний
extraneous, foreign, outside
outside, unrelated, not involved
stranger, outsider
фони́ть
to make extraneous noise, to emit background noise, to hum, to buzz
Examples
Внимание, отвлекаемое посторонними мыслями, мешало сосредоточиться на тексте.
His attention, distracted by extraneous thoughts, made it difficult for him to concentrate on the text.
