Susurrant in a sentence as an adjective

Most likely a corruption of susurrant. From susurrus, meaning a murmuring or whispering sound.

The usual adjective would be susurrous or susurrant, rather than susurrential, but in any case it would mean “full of whispering sounds”.

Susurrant definitions

adjective

making a low continuous indistinct sound; "like murmuring waves"; "susurrant voices"

See also: murmuring whispering