unnoticed

adj

1. Not noticed.

   “In the midst of a world war many centenaries pass unnoticed, but one which fell on August 2, namely, the opening of Fenchurch Street station, is deserving of record.”

   “The announcement was slipped out almost unnoticed on the last day before Parliament was dissolved to prepare for a General Election.”

   “Mr. Hankwitz’s endorsement of Betterment was unsolicited, but the power of so-called finfluencers like him has not gone unnoticed.”

   “The change of blue of the flags adorning the Elysée Palace was first made a year ago but went largely unnoticed.”