not noticed inadvertently

adv without being noticed

unusual or striking, Worthy of being remarked or noticed; noticeable; conspicuous; hence, uncommon; extraordinary, Attracting or worthy of notice, especially for being unusual or extraordinary, noun_ Something noticeable, extraordinary, or exceptional; a noteworthy thing or circumstance

a statement that expresses a personal opinion or belief or adds information, A mark that replaces another mark, explicit notice, verb_ make mention of, make or write a comment on, transitive verb_ To take notice of, or to observe, mentally, To express in words or writing, as observed or noticed; to state; to say; -- often with a substantive clause, To take notice of, or to observe, mentally; as, to remark the manner of a speaker, intransitive verb_ To express briefly or casually as a comment, To make a comment or observation