Luller

Part of speech: noun

Definitions

1. A person or thing that soothes another into calm, quiet, or sleep
2. Something or someone that gently quiets a restless person or animal until it settles
3. One who or that which lulls, calming an agitated mind through soft sound or steady rhythm

Etymology: "Luller" is simply "lull" with the agent suffix "-er" attached, so it names a thing or person that performs the action of lulling. The verb "lull" is the older word here. It is generally linked to the imitative sound "lulla" or "lull," used to soothe a child, and it came to mean to quiet or soothe, and later to settle a disturbance or make someone feel secure. Adding "-er" to a verb to name the doer is one of English's most productive habits, which is why the noun was easy to form. A luller, then, is whatever soft sound or steady rhythm does the soothing work that the verb describes. The word is plainly built and offers no dramatic coinage story, so its interest lies in the sense of the verb it grows from.