silentious
/ˈsɪlɪnˌʃəs, sɪlˈɪnʃəs/Definitions
1. adjective
Causing or characterized by silence; quiet.
“The silentious nature of the forest helped the animals to survive.”
2. adjective
Marked by or causing a lack of noise or sound.
“The silentious environment made it difficult to hear the birds singing.”