(a.) Whispering; rustling; full of whispering sounds.

aspiration bated breath breath breathy voice drone droning exhalation gabble gibber gibbering jabber jibber little voice low voice maundering mouthing mumble murmur murmuration murmuring murmurish murmurous mutter muttering rustling sigh soft voice stage whisper still small voice susurrant susurration susurrous susurrus underbreath undertone whisper whispering whispery