silent
adj.adj. making no sound or noise. You use this to describe a person who is not speaking or a machine that works without making a sound.
adj. characterised by an absence of sound or noise; refraining from speech or expression. Often used to describe electronic devices or modes that operate without auditory output.
The library is completely silent today.
I keep my phone on silent mode during meetings so the notifications do not distract my colleagues.
The silent machinery of the modern electric vehicle allows it to glide through urban environments with minimal noise pollution compared to traditional combustion engines.
From Latin silēns (“silent”), present participle of sileō (“be silent”), from Proto-Indo-European *seyl- (“still, windless, quiet, slow”). Related to Gothic 𐌰𐌽𐌰𐍃𐌹𐌻𐌰𐌽 (anasilan, “to cease, grow still, be silent”), Old English sālnes (“silence”).
Typically functions as an attributive or predicative adjective; in technology contexts, it often modifies 'mode' or 'operation'.