Intermediate (B1)
IPA: //ʌn.pəˈsiːvd//
KK: /ʌnˈpɜrˌsivd/
Definition
Not noticed or recognized by someone; something that is not seen or understood.
Example
The changes in the environment often go unperceived by the general public.
Conversation

Did you notice how the changes in the plan went mostly unperceived by everyone?

Yeah, it was surprising how people just went along with it.

I wonder if that's because they trust the organizers too much.

Definitely, sometimes things can slip by unperceived when you're not paying attention.
Synonyms & Antonyms
Synonyms
unnoticed
invisible
obscure
Root Explanation
Unperceived → It is formed from "un-" (meaning not) and "perceived" (from Latin "percipere", meaning to seize or take in). The word "unperceived" means not taken in or not noticed.
Memory Tip
Think of 'not' ('un-') noticing or 'taking in' ('percipere') something — that's why unperceived means something that goes unnoticed.
Visually Confused Words
unapperceived
unreceived
undeceived
perceive
perceivedly
imperceived
unrevived
unpierced