The term "more lulling" typically refers to something that has a soothing or calming effect. Antonyms for this word would include adjectives describing things that are jarring, alarming, or unsettling. For example, instead of using "more lulling" to describe the sound of waves washing up on the shore, one might describe it as "more jarring" if the waves were crashing violently against the beach. Similarly, one might use "more unsettling" to describe a piece of music that is discordant and chaotic, rather than "more lulling." Other antonyms for "more lulling" might include adjectives such as disruptive, unnerving, or agitating.