unintrudingadj.
Etymology: Previous versions of the OED give the stress as: uninˈtruding.
the mind > emotion > humility > modesty > [adjective] > unobtrusive
1796 F. Burney III. vi. viii. 300 She is there almost every night; only being unintruding, she is unnoticed.
This entry has not yet been fully updated (first published 1924; most recently modified version published online June 2019).